<prompt> Human: I was looking at my 401K from a previous employer and realized that I have 143K but only about 35K of that was my money that I decided not to spend.I started this job in 2009 and left about 5 years later. By the time I left, it had grown to about 97K with 21K of that being market appreciation. Of the 76K of actual contributions, only 51K came from me, the rest was free money from employer contributions.The 51K of before-tax contributions would be about 35K of after tax, or the price of a nice car that I could have bought over the same 5 year period.  <response>: Awesome! Great job! What percentage did you contribute out of your pay? What helped keep you on track to keep up the contributions? 