When to quit W2 Job and how do I still get mortgages?

[Luke Masaschi]

This may be a dumb question but I recently finished my first BRRRR and am refinancing at the moment. I will be able to cash out my original down payment + 30k more if I wanted to but as im going through the process I was wondering in the future if I pursue investing full time how do you still get approved for mortgages? I try and take as little profit as possible as im only 22 and im looking to grow but almost every mortgage company/bank needs 1-2 years of W2 I qualify for that as of now but how in the future do you do it without W2? Thanks!