People have covered a lot of ground with equities and their BTC journeys. To add something a little different, I would say the following:

1- Not prioritizing location - I spent a lot of time in different cities where your financial/economic development lag and you can only take remote jobs to make up the difference. However, you miss out on all of the convos that get people hired/help people fund their companies.

2- While this is a financial failing, I feel somewhat of a moral vindication that I haven't raised institutional venture capital, however that's easily one of the ways you can quickly build personal wealth if you play it right.