How do I get my soccer level back?

I have been playing since i was 8 n now i'm 17 n i'm the captain of my high school soccer team and i haven't played soccer for like 3 weeks and when i started playing again i wasn't playing the same, i'm a good soccer player and now i play diffrently i don't play like i just to and it's pissing me off i had to get my level back because the season starts in like in a month and i want to play lke i just to.... like when i play i don't do what i just to i just to do triks and now i don't do them but i don't know why can anybody help me or give me some tips on how to get my level back pleee i will appreciate it....thanks