Successes in other businesses do not usually translate into successes in trading, just like Michael Jordan couldn't make it playing baseball, or golf.
You do have one thing going for you: Capital. Since you are well capitalized, you don't need your trading profit to put food on the table and it is much easier to succeed if you don't have money pressure. For you it comes down to how passionate are you about trading as a new career.
I was in your shoes a few years back. So, it can be done. It is hard work, 24/7 hard.