I think so. Many times going to a different place than the one to which we associate those feelings helps a lot. On the other hand, though, it could be that instead of distracting you, traveling alone could result in having a lot of time to think about your situation and therefore put you down even more.
Most defiantly! I believe this question to be very relevant to those traveling to experience more than their little life and day to day routine. By traveling you are unashamedly stepping out of your comfort zone and experiences new memories every day whether this helps you to escape reality or simple see the world in a new way.