Whenever the mind is not happy or reacts, or whenever defilement is present, yogis think that it is a problem. This is actually not a problem. It is only a problem when the mind thinks that it is a problem. 

If you have right thought, it is just an experience (being known). It is only a problem when the mind thinks that the experience is a problem.

Experience is always happening; sometimes we can bear the experience, sometimes we cannot. However, no experience is a problem. (An object is just an object.)