I think we've all felt that way at times, but we snap out of it. Gardening does get you outdoors and some exercise. It is a joy to have beautiful blooms or to be able to eat your own fresh fruits or veggies. Weather is always a gamble for everyone. Some years are wonderful, and other times the weather is totally hard on the gardens.
I finally have a greenhouse I've wanted my whole life. Right now I'm battling mice, chipmunks, aphids, whitefly, spider mites and more.
It's a challenge, but I plan to continue and will get these things under control. I enjoy the few plants that are doing very well right now. I had a crown of thorns for 10 years inside the house. Now that it is in the greenhouse, it's blooming non-stop! I have a hibiscus doing the same thing. I got more tomatoes than we could eat this winter, despite the aphids! I had wonderful lettuce, peppers and onions. I'm just experimenting now to see what will work out the best.
I like the suggestion that you try things other local gardeners are growing. I've also tried plants more than once before giving up on them. Hang in there, stick around here and enjoy the ride!