Leo, Welcome to the board. Maximize your savings by living below your income and by maximizing that income (if feasible--keep a long-term view). Regarding the priorities of your investments, I'd second the ideas that Rambler mentioned. There may be better options out there than rushing to repay your mortgage. Mortgage rates are at near-historic lows, and having a 5-6% mortgage will feel pretty good if/when inflation rears its head (that is, you'll be money ahead by paying off your 6% mortgage with money that decreases in value by more than that every year).
The only things I'd add (things that worked for me):
-- Put as much as possible on autopilot--the investements in your IRA, 401)k), after-tax accounts should come out of your paycheck automatically, before you get it, if possible.
-- Learn about investing, but don't think about it too much or fiddle around with your investments too often. Find an asset allocation you can live with, rebalance once per year, and live your life. The $$ grows faster if unmolested and if you don't obsess over it.
-- Keep your investing costs low. "Low" (in my opinion) means that you pay no more than 0.5% in total fees and expenses for your total stash. If you get into the wrong funds or pay someone for advice, you can easily pay 1-2% per year in expenses.
1% extra cost may not sound like a lot, but it is.
If you invest $5000 per year for 25 years and get a 7% return on your money (after fees), you'll have $338,382 at the end of that time.
If you pay an extra 1% in fees and expenses, you'll have just $290,782. That missing $47,600 would buy a lot of beer and pizza, even after inflation.