Beth I know exactly how you feel. Had lost alot of weight and gotten healthy by going to the gym only to let it all go 2 years later and even more weight than before, here I am. I was stressed to the hilt w/my job and my marriage fell apart as well. I'm now seeing a therapist for my depression & stress and said enough is enough. Just like you I said excuses! Someone told me that you have choices to make in life and it's up to you to make the right ones. So I'm choosing to make this year about myself and my health. To get healthy for my 9 yr old son again.
I had a simular issue w/the gym I was going to as well. I asked for someone to show me how to ust the weight machines & I wanted a trainer but couldn't afford the extra to have one so I did my best on my own on the weight machines and ended up pulling a muscle in my shoulder. Once healed I took some yoga classes that I absolutely loveed and Now I work out at home in a room I created just for me!
So hang in there and keep making the right choices! One day at a time, one step at a time.