I’m going to assume you mean life dreams and not your sleeping dreams. Having said that… I learned a while ago that it is important to have a range of dreams and have quite a few of them. If dream A becomes impossible focus on B and C. They might be travelling, a hobby, volunteering or the obvious work or family. When I came to the realisation that I wouldn’t achieve everything I’d hoped in my work because of my stutter and epilepsy I went through a mourning period and really tried to pour myself into other parts of my life