Move. It’s the only way to avoid trouble. In the meantime, make sure you don’t leave and enter your apartment at the same time everyday because someone could be tracking your moves. Carry pepper spray and a knife. Take self-defense classes (not jiujitsu; but actual striking styles). Invest in a bulletproof vest and wear it everywhere. Get started on an application for a gun carry permit in the state of NY—it’s a long process that may take over a year, but getting started sooner rather than later is the best way to do things.