The one constant inside and outside of everything that happens to you, is you. So it makes sense, to fix your problems, you need to reassess how you approach them.  

If you climb ten flights of stairs you will be fatigued (most of us anyway).  We all know about physical fatigue because it’s so easy to see the cause and effect. Spend twenty minutes on a treadmill and there’s no question what tired you out. Did you also know you can get decision fatigue?