<prompt> Human: I have some extra cash after budgeting at the end of the year and Im not sure where I should use it most effectively.I purchased a condo at the beginning of 2017 and still owe mortgage insurance each month. Putting the extra money towards my principle amount on my loan would almost double the amount Ive paid toward principle, making the time I have to pay mortgage insurance shorter.I also thought about putting into my 401k which is also in a infantile state. Seeing as how theoretically the more you have early on the larger it can grow in the long run.I have a savings amount that I dont touch unless its an emergency that would keep me out of debt for about 3-4 months if I lost my current job. I dont have credit card debt and Ive finished all my Christmas shopping.How should I use my extra money most effectively?TLDR; Dont know best option for extra cash, 401k, principle on mortgage, savings, or spend it?  <response>: Pretty much always 401k in the long run. 