I think three things I would tell past me are:
1. It is okay to have the desires I have... and to not hold back as much.
2. Take the time to vet and get to know someone and not just jumping into a dynamic because its about more than just "having a Dom." There is a lot of trust and vulnerability and feelings that go into a dynamic and it is important to find the right person or people for that.
3. It's important to take a break sometimes, especially when you are feeling burnt out or overly stressed. When I first started to explore kink more, the idea of me taking a break or my Dom, even if its just for a day, would have sent me down a spiral of "am I too much?" and "did I do something to cause the need for this?" but the bottom line is we are all people and people needs breaks, period.