Frustration

Does forgetting for a split second ruin a week's worth of healing? I let the dog out, open the sliding door, pull too hard, too fast, and now I'm back to square one. Well, not quite, but it just feels like I'm not healing as fast as I should be.  I'm no good at being a cripple. I feel like I'm wasting the efforts of my family and friends who do so much for us.