Hi Jo,
I have struggled with this also on the Dex, especially at first. I have not been diagnosed too long and I'm a week into my 4th Cycle of CTD. Sometimes I find myself staring out of the window, feeling really sorry for myself and feeling weepy and there's nothing wrong with that.
Make allowances for that, remember that although its difficult you will usually have more good days than bad and remember its the meds that are taking effect.
Its got easier for me as I have gone along however I still get down days sometimes not just on the come down off the Dex either. It effects me more when I'm tired so I have to discipline myself to go to bed early and the difference it makes is huge the following day.
Try to keep positive. I take each day as it comes, try and stay away from negativity (without burying your head too much in the sand) and your mind-sets should change as you go along and you get to come to terms (although its difficult, I know) of the Illness.
I try and envisage the time a cure will be found and we will all be treated. Some may look upon this as being unrealistic however it helps me…so do whatever helps you best to get through it.
Keep Strong, you'll find a way.
Kind Regards
Scott