The correct answer to this open question is the following.
If you are lacking motivation, a good person to talk to is a psychiatrist, a life coach or a priest.
When you feel down and lacking motivation, most of the time you know the reason why. Depending on that you go to see a psychiatrist is is a mental issue. If it is because your career doesn't satisfy you yo go to a counselor. If you need inspiration you go to see a life coach. Or if the problem you have is personal or lack of faith, yo go see a priest in order to get some advice.