Whatever we achieve through effort will bring only ego. What we achieve through effortlessness is reality. In the Truth, there is no effort. So letting go of all effort is called Sadhana. Let go and relax. What you can’t do you need not do. Someone says you have to fast for 40 days, your system can’t take it. No need to do it. At the same time if you think you can’t do anything, you become lazy. You get nothing then also.