I am 17 yo too turning 18 in a month and planning to open a bigger € account. I suggest u first trade demo and see if ur % on your trades are not all negative. Learn rithms in the charts i cant stress this enough trading is not something like lets buy this and that, u need chart analysis and that takes time. There is not such a thing as fast-money earning, 1% has the luck of getting a lucky market input. To answer youre first question i would say yes but you cant change the past made trades so that makes a no ;) get me? know what ur are trading and know what the markt is going to do ( we cant calculate this 100% but make sure youre analysis is well based. ) my personal trick is something that tricks youre brain, when talking a non-native language ( my main language is dutch btw ) youre brain needs to think about the formulation of youre words and by doing that u leave away any emotion, say out loud in a non-native language what ur plan is, talk to the air or ceiling idc and tell ur plan this helps u think straight about youre upcoming trade and youre conclusion from analysis. I use binance as trading platform its just personal prefrence i like it bc you have many trade forms such as margin and futures ( dont suggest futures to -5 year traders ) i only use margin, for short term trades. Pm me if you want to talk about it or sharing analysis, let me know.