It’s really tough. There are some very supportive threads in the conception forum that you might find helpful.
I used to let myself have a “misery day” when AF came each month where I let myself stay in bed, have a good cry and indulge all those “everyone else is pregnant except me” thoughts, I would also have a big glass of wine and usually some chocolate cake as well.
The rest of the time I kept a “positive thinking” notebook by the bed and would try and write a few things in it every day - either statistics to reassure myself that the odds were in my favour and I just needed to be patient or other positive thoughts about good things in my life that I would still have even if I couldn’t get pregnant (like my relationship, home, nice holidays etc.).
I tried to plan things to do with my partner so we weren’t totally focused on ttc, even if it was just going out for a walk or a meal, watching a box set together or bigger things like booking concert tickets, planning a holiday etc. That helped to take the pressure off especially for my partner.
I also made an effort with my diet and fitness, cut back on alcohol and caffeine etc. so that each month I didn’t conceive I could focus on the fact that I would be that much more fit and healthy when I did get pregnant.
Pregnancy has been tough at times but it is a joy compared to ttc (took us 8 months in the end). Good luck OP 