Is it normal to lose hair everyday ?

i'm a 19 year old guy who's trying to grow long hair (e.g Zac Efron). However i've just noticed that some of my hair drops out whenever i wash my hair or wake up after sleeping. Is normal to lose hair everyday? I seem to lose about 20-30 hair a day. How can i grow long hair if it keeps falling out ? Won't i be bald within time ?