A coaching mindset is always resilient, optimistic, and looking to close the gaps needed for a higher level performance.  If you listen to great coaches, the lens they look through is always about what went well and what can improve.  It is usually a balance between those two and never too one-sided.  A coach knows that you should never think that you have reached perfection, but at the same time, if you are too critical and negative you will not foster confidence and determination.