I am not sure what to do with this goal

I am not sure what to do with this goal.  I know now that this goal is not achievable as I have gotten worse.  I was reading about setting goals and it said that it is better to concentrate on the performance than on an outcome.  Here I can write something like do yoga everyday, or something like that.  But I am so scared that I will not do it that I don't want to set the goal.  Plus who cares about it, i am feeling so low it doesn't even matter.