[Serious] Anyone else having a hard time coping with getting older?

I'm 36 and have been having a really difficult time dealing with everything that comes along with being single, gay and older. I just feel like the best part of my life is slipping further and further in the rearview and am nearly helpless to stop it. This paired with my fear that I'll never again be in a relationship caused me anxiety and depression and I've gone for counseling but they don't seem to 'get it'. I'm just wondering if anyone else feels this way and, if you've made it through, how you did it.