I coach golf. One of the first things I tell a student is that I will tell them to do things that may feel uncomfortable, awkward or seem ineffective. They must make a decision to trust what I tell them or never improve. If they only partially, or not at all, believe that I know what I am talking about, then inevitably they will not pay attention to what I tell them. However, after I demonstrate how to do it and they want to be able to do it as well, then they gain more confidence.