I'm 14 and doing drugs I need help?

Well so I'm a 14 year old guy who is doing some drugs and I relized what I was doing. So I smoke pot, drink, and ciggs(I don't really like ciggs) but I only do this occasunly last time I did it was in December but that doesn't change the fact that I did drugs and I feel like I need to keep doing them but I just want to clean life also my friend is a really big druggie like pot ciggs any thing he can get daily. Now I just want to get my life clean and stop it all. Plz help