I'm going to ask for my possessions back
Why would you do that? Is there any particular reason behind it?
It's good that I come to my senses every now and then.
If you gave them as a gift, it's not really considerate to want to get it all back. You can tell them how you were feeling back then with any potential mental exhaustion, but it would be a wonderful gesture to continue in letting them keep it.
lol, do I really have mental problems?
If you are really unsure about that, how about talking to a doctor who can possibly explain your behavior and help you get back on your feet? I believe it's best to just let them keep the things you gave, wouldn't you want to have a stable relationship with them?