How can I legally address family harassment, theft, and threats?

I needed help with family problems because I was getting mental harassment from the time they came to know that I wanted to work here in my hometown. After all, they wanted me to be outside since my brothers had their plans here. The brothers have asked me to commit suicide and to go and die outside and said only murder is left for you, and lots of things are happening in an abnormal house. There is a long story, so I haven't explained it, but just a short message. They have even stolen my money for the checkup and even an amount of other little money that I was supposed to receive and even stolen my business ideas, and my condition is getting worse.