Suggest Therapy To Change Voice

sir,
My age is 25. iam male. my voice resembles a girl i am facing so many problem with my voice sometimes i am loosing my confidence also at the time of teenage transition doesnt happend for my voice. can you tell me some of them so that little change in voice will help me alot. when i am speeking to a strange and new person they will think as if i am a girl. i heard abt hormone therophy. Is there any theraphy for changing my voice. Please help sir?????????????????
Regards
venkat