I don't feel fresh without coffee/tea. But I want to overcome this?

try to have will power. It is hard letting go of something we really enjoy. I should know . And I know it is probably driving you crazy. Or you could still have coffee and tea but just limit how much you consume. This is the best answer I have. I hope that it helps you.

Then take inventory on your overall health.  Eat healthy, exercise, drink plenty of water and get a proper number of hours of recouperative SLEEP!  Improving your health will monumentally help you 'freshen' your morning, your afternoon and your evening.