I have done something similar years ago, tough mine was not a change (I love my job - Team Lead in Admin/Security role) - it was an addition. Had to learn Pytho

I have done something similar years ago, tough mine was not a change (I love my job - Team Lead in Admin/Security role) - it was an addition. Had to learn Python to be able to backtest and automate my stock market trading when Broker's APIs became available and now I am thinking about very early retirement since I am making more money from my hobby, (the problem is I love my "regular" job too much, so I am postponing every year...) I guess you can try to do something similar in your free time, the barrier of entry is very low and you don't have to spend money to learn and backtest and if you find an edge, it could be a really live changing experience... Having FU money should be the goal for everyone, because it gives you the ultimate freedom to live as you please and do whatever you really like...