You have to understand and accept 2 things:
1. Each trade has a random outcome, hence be at peace with both winning and losing, as long as you are following your trading plan
2. If you have an edge and execute your trading plan flawlessly, you'll make money in the long run, but there will always be drawdowns along the way.
It make sense to estimate what your max dd can be, make sure you can get close to that point and still have enough in your account to keep trading, and go for it. Losing trades are the price we pay to get the winning ones.
Just do it!