Hey! I see you are pretty new here, welcome to the forum.
Pred can be a very powerful drug, and I'm currently on a taper at 20mg down from 60mg a few weeks ago. Needless to say, the side effects are showing physically and mentally.
Physically, I am breaking out in acne and my face is swelling a little, but that's not too bad. I have bad bone density in my back from the other 3 rounds of 45mg (to a taper) that I have been on.
Mentally though, the 60mg stint definitely affected me. I could not help but write lists of everything I was doing and plan everything to a regimental system. I'd get extremely angry when I would miss one of the things in my plan, and I'd have freak outs over menial things like what to have for lunch. Sleeping was even harder, because it just felt like the off-switch for my mind wasn't there any more. All I could do was think about everything from the dots of light coming through the windows to the little creaking noises and playing out the next day exactly as I want it to happen along with everything that could go wrong. It was pretty damn scary. I'm still only sleeping about 3 hours a night, but at least it's more than it was before.
For me personally, the mental issues started to disappear with the decrease in dose, but I am certain that I could never live with my mind in a state that it was in. It brings out obsessive behaviour, insomnia and anxiety in me and it's genuinely one of the most scary drugs I've had to deal with.
Regardless, it's a wonder drug in the help it can bring to us in achieving remission, and for that reason alone it's worth it to most.
EDIT: Also, you might want to check out the "Miserable Prednisonites" support group which you should be able to find to the left under my name and post count.
It's generally the go-to thread for general Pred discussion should you wish to talk about other things surrounding it.