There was a time in my life when a simple walk around the block was a step I had to force myself to take. Looking back it seems like a small step but at the time it took every bit of courage I had. Different than courage really... it felt like a huge risk but a risk I had to take if I ever wanted to get my freedom and confidence back.
So any small step will do. Next time you get one of those ideas try to push yourself to follow through. And to that example I gave about my steps... there were times when I couldn't make it all the way around the block. That would seem like a failure but it wasn't really. It was just a smaller step than I'd hoped for.
If the same thing happens to you, try to look at it that way.