Recently My Doctor Told Me I Have Sinusitis. No Doc

Recently my doctor told me I have sinusitis. No doc cared to tell me this before. Going to doctors since I was 15 now I'm 23. From years and years I've been suffering from sinusitis it's just now that I've been told this. Sinusitis has depressed me. It broke my dream. The blocked nose. The cold like headache. The sore throat. And especially the nasal voice. Blocked nose depresses me. I can't become a singer anymore. I can't sing cuz of I get sinusitis attack every now n then through out the year. And there's always a cold. please tell me is sinusitis curable? I don't want to get this cold anymore. I don't want this blocked and running nose. Please help me out. I can't take this no longer. These are the issues I have
Blocked nose. Which makes it difficult to breath. A headache which is cuz of this cold.
Depressed. Sore throat. I don't want this sinusitis. I'm tired. I can't take it anymore.