Other than sleeping and loosing or altering your consciousness I don't think you can actually travel in time but I do believe you can control its rate.
It's my belief that time does not run at measured constant rate as most people believe. It is slow when you are a child and runs faster as you age. But time as we understand it is a linear quantity independent from human experience. I always thought your age should be a reflection on the amount of human experience you have gone through and not be a measure of time. It should be a measure of how much exercise your brain and body have gone through - how many times you brain has synapsed.
Cultures also have different perceptions of time. Eastern and Western concepts of time are very different. In the West most people believe the past is something we have left behind and cannot see unless we turn around, while the present is where we exist momentaily as we stride confidently facing forward into the future, in front of us. We are on a boat on the river of time standing on the bow looking forward into the future coming towards us. But according to a Eastern thought, time is likened to a river and human awareness to a man standing on its bank facing downstream. The future approaches him from behind and becomes the present only when it arrives alongside where he is standing and he is first conscious of it out of the corner of his eye. Thus, before he can assimilate the present, it is past already. The present washes away to become history in front of the observer. The recent past is nearer and it can be seen more clearly. The distant past is far away ahead of him, its features only dimly percievable. Instead of squarely facing the oncoming future as in the Western metaphor, this more accurate model acknowledges how the present, as we all know, continuously blindsides us from an angle of vision that assures we will be unprepared.