That's called addicted whether mental or physical...it's still addicted & definitely more difficult being off of be because you are feeling that way. That may have some effect on the way you are feeling (lack of motivation). Any abrupt change that is made to the body causes it to have to adapt to the new normal & the body put's it's energy into adapting.....leaving less energy for being motivated to doing the things that we were used to doing before.

It all just takes time to settle out.