how do you deal with the emotional termoil that an unsuccessful fertility journey brings?

Seriously, there are days when I feel like I just can't handle it anymore. I have always wanted to carry my own children and after 3 years of trying, I feel like I'm done some days. I'm stressed and sad about it constantly. We stopped for awhile and tried to just chill out and see what happened but it just made it worse. I'm so tired of the "it will happen when god knows you're ready" or "your time will come" comments from friends and family. I really want to SCREAM shut the fuck up, at them. I feel like no one understands. Then my MIL JUST had to say some shit about "waiting" to try until next year as if it's her choice wish just makes it worse. I feel like I need some advice from women who have been in my shoes. How do you cope?