This is actually one of my biggest fears at the moment. You must take care of your hearing as you would your heart. Having your ears checked by an otolaryngologist twice a year is absolutely non-negotiable. Also, wearing ear plugs for almost everything is essential.
If you do that, your hearing will be fine for a long time, my friend! Look at engineers like Andy Wallace or Dave Pensado. They're really legendary old wizards who would lose both legs before they'd lose their hearing.
My best wishes to you!