
Mind your ears, they are sensitive organs that are crucial to any musician.
Don't set the volume too high and put a limiter on the master channel just in case. This goes especially for those who are using headphones for extended periods of time.
Give your ears a rest now and then.
It often disturbs me how loud some people's headphones are, even when they are in a quiet environment. A friend of mine has hearing loss and tinnitus. No fun.
Most of you already know all this, but I'll write this here because it cannot be stressed enough.