In this Much Young age,Sleepless nights means,There must b some deep psychological factors must b there,either from brought up,family relations,More tension abt ambitions,future r any disappointments,Subconscious fears r any personal issues,ur high sensitivity attitude etc.From this age, if u start taking tranquilizers r sedatives,there will b no end.So,better u think abt Homepathy.Though in Homeopathy also,U may not get instant relief as in allopathy,but slowly based on progress,u can gradually decrease those drug frequency n potencity &ultimately u can quit.But parallally,u hav to follow meditation,pranayama,breathing exercises(Like Art of Living) with Yoga,regularly will give u good results to built ur mind,Confidence levels Strong.TC.