There are so many success methods you should have started back before they got into kindergarten.
Read to them. Every day.
Teach them songs. Before they get into kindergarten they should be able to sing at least eight songs from memory, and it's perfectly fine if those songs are nursery rhymes.
Take away the electronic games, videos, cable TV, satellite TV, and teach them interpersonal skills. Teach them how to play "let's pretend" so their imagination expands. They'll get a LOT further being able to hold a direct conversation instead of texting.
Teach them about body language and how to use it, interpret it, and react appropriately to it.
Teach them at least one other language, and it doesn't matter if it's American Sign Language, French, Spanish, German, Russia--or even a "dead" language like Latin. The more languages they can read & speak, the better their minds will be at problem solving.
Get them physically active outside, preferably with a few other kids, but it's OK to do solo things like kayaking or rock climbing, as long as others are present for safety.
Teach them first aid--professionally taught classes. Life saving for swimming (every kid should know how to swim & save themselves and others), CPR for when you're having a heart attack, the Heimlich Maneuver, bandages, and more. The Red Cross can help you do this.
Get them involved in two or three sports that don't emphasis unsportsmanlike behavior. If you don't want them to be tackled or checked or injured or bullied later in life, maybe football or hockey aren't on the top of your list. How about soccer, baseball, tennis, cross country running or other track & field categories?
Dump any first-person-shooter games; they're not necessary for making friends or learning how to act in normal society.
Give them music lessons, and don't let them quit until they've completed at least seven years of lessons. Piano first, then a wind or string instrument (not including guitar--I'm talking violin, cello, bass, etc.).
Get them into Scouting. Support it 100%, and be involved. Your kids are your life, now; your sole priority should be creating good citizens with creative minds who are socially aware and who don't participate in bullying.
Teach them to have an open mind. LGBTQ is normal. Every colored skin is normal. Short/tall/wide/skinny is normal. Every religion is normal, as is the absence of participating in a religion.
Send them on beneficial travels, by which I mean church trips to help folks who are less well off than you are. Helping clean up after a natural disaster, helping build schools for need neighborhoods, helping poor people anywhere, but especially in the U.S.
Teach them morals. Bullying is wrong. Racism and the KKK are wrong. Might is NOT right.
Take them everywhere there are demonstrations of Science, Technology, Engineer, and Math. Maybe it's at the bottom of an underground mine. Maybe it's at an airport. Maybe it's at the ocean, underwater. Find opportunities to expose them to things that require using the hands and mind together.
Dump the sugar and coffee and "energy drinks", and give them a balanced meal. Don't make them clean their plates when they say they're full. Teach them it's OK to leave food on the plate--and help them to decide how much is the right portion for the first time; next time take less food and it won't have to be thrown out.
Be an example to them--keep yourself in great physical shape, avoid vices, be honest and always honor your word. Especially your written word.
Always drive the speed limit or under. Always yield and be courteous. Don't honk your horn, don't flip someone the bird, and never use strong language.
After all, you're they example. They'll do as you do when they grow up.
Be the best person you can be, so they can have the best example to learn from.
Our first was an Eagle Scout by the time he was fifteen. We had an exchange student live with us for several months from Germany, and our son later was an exchange student in German. The same with our daughter.
Our son completed a Bacheleor's of Science degree in Theoretical Particle Physics and another degree in Astrophysics and Math a few years ago. Last year he finished a Master's Degree in Particle Physics, and he'll have completed a Ph.D. in Theoretical Particle Physics in December of 2021. His university sent him three times for summer-long sessions working on the Large Hadron Collider for CERN in Switzerland, where he contributed to the project and was written up for his achievements.
Our daughter struck out on her own, finding her own job in Marketing when her preferred field of Theater closed due to COVID-19 just as she graduated with a Fine Arts degree in 2020. She moved herself from Minneapolis to Chicago this spring and had a new job seven hours after moving into her apartment. She picked a living location in downtown Chicago because there are five major theaters within walking distance, and has already applied there, receiving positive interview comments. I'm waiting for her to tell me she's got a new job any day now.
We gave them emotional support, ensured they applied for jobs while in high school, and taught them to be honest and moral, to be at work on time, and to take charge where there was need. They've received promotions and glowing comments from their employers, and they're both the kind of people you'd like to hang out with, work with, and be friends with.
They're independent, yet love people. Because we were involved in their lives without micromanaging them. We gave them good examples to follow, supported their extra curricular activities, pruned their vices and fertilized their minds and activities.
It's an old saying, but worth taking to heart: "Raise a child up in the way they should go, and they will not stray from their path."