How to deal mentally

What happens to you guys when you have a big amount on the line?

I just realised this thing isn't for me, my heart rate was so fast and I got so nervous, crazy adrenaline too. I was doing a bet but didn't realise I had £1500 on it, that's a crazy amount for me. I think i might have just won it by one corner (spurs game, under 4 corners either half).

Edit: Btw just a note, why i didn't realise the amount is because it was not a cash amount, it was a quiz so it was still £1500 on the line. If i cash out now it's 3k, i probably should before I get a heart attack lmao 🤣

https://ibb.co/cJtBcN4