<prompt> Human: Hey all,Im pretty new to the mindset of aggressively saving money, and Im afraid I have been making a foolish mistake by severely under-investing in my 401k.For a little background:26 years old75k salarybonus say 5kRent 600 including utilities, etc...Car paid offZero dependantsIve been trying to invest 12 my take-home pay into my personal investment account which I run through Wealthfront. Right now this equates to 2,100 per month. This account is now worth about 43,000. I have 10k in my current 401k, and I also have a rollover 401k IRA from my old job which is worth about 18K. Also, for better or worse, I have 10k invested in a crypto-currency venture fund that is locked in for another year at minimum before I can sellreassess.My companys 401k has employer match up to 5037; per 637; employee contribution, as well as an annual contribution equal to 437; of my salary. Until now, Ive been in the mindset of investing just enough in the 401k to get the full match, and investing the rest into my personal account. Obviously, I have not been reaching the 401k annual limit because of this. Have a made a big mistake by not investing in my 401k in full?Any advice is appreciated!  <response>: You havent made a big mistake. Youve made a very tiny one. Youre 26 with a decent salary and have listed 81,000 in assets, so youre doing really well for your age. The only mistake is that youre missing out of some of the tax advantages. Youre still saving rather than squandering the money which is the important thing. Yes, you should probably increase your traditional 401k contributions first and only pour excess into an after-tax brokerage account. 