TTC for so long I'm disbelieving

How do you stay positive month after month TTC? I'm over 30 and AFcomes every month it's all I've ever known. Does anyone else feel like it's just always going to be this way? How do you keep positive month after month? I'm in disbelief that this will ever happen. People that have already had one kid must not feel this way bc they know what to expect and that it eventually will, but for those of us trying for #1 doesn't it feel like you don't know any different so since we don't know what to expect it almost feels sad that it might not ever happen? What to do when it feels hopeless?