Simplify how you approach every challenge by being realistic and lowering your expectations down to "a couple", "a little", "just one".
Stand up, take a breath, and say, "I can do ONE thing and see what's possible."
When you open up your vocabulary, you stop limiting your abilities. Your words carry power. The words we speak have intentions, and intentions become reinforced when you reaffirm them. You send a signal to your body from the inside, then the outside, and then back inside.
See, it's a cycle!
Practice regulating your thoughts before, during, and after any challenge you encounter. Make it so small, so manageable, that it requires the path of least resistance.
Experience wins daily, because true power is accumulated through the small, secret victories in our lives daily.