I see you at 5 of 12 now. That's not exactly Rocking the world, but it's fine. Anything >40% and you're likely profitable, esp. if you're a play-to-win guy and your ITM finishes are 1st-heavy.

As to controlling your emotions, I've found that turning each SNG into a kind of experiment helps. You decide, for example, that you're going to rep the top pair on just about any flop. Or you decide to play tight and passive until level 4. See how it goes. Make mental notes.

Definitely track your ITM % and ROI. I can send you a spreadsheet if you need it.

Then you're learning from it even if you lose, so you're coming out ahead.