If it's not the Weather, I'm in Trouble

I keep wanting to feel more motivated, and I keep doing things to try to motivate myself, but lately I feel like I'm in the biggest rut of my life to date. I'm no longer an athlete, my work is starting to bore me, and now my commitment to drawing is wavering. The light at the end of the tunnel is dimming. We've been stuck for a week in snow and extremely cold temperatures so I'm wondering if that's affecting me. I'm mentally and emotionally shutting down and I feel more introverted every day. I disappointed myself even more by doing only two drawings in four days. The first was a reaction to my husband telling me how the RA is now affecting his feet. The second was right after I watched a program on the History 2 channel about a volcanic event 250 million years ago that wiped out 95% of species on earth (they kept referring to it as the "greatest mass-extinction event of all time"). I don't even know why I'm even posting this stuff anymore.