How old are you? Where did you train and work?
Unless you are from a few countries you will have to pass you licensing exams, match to an open residency (if one is available) and then repeat a 5 year residency in psychiatry. For most IMGs the issue is not finding a leftover residency because there are very few left. Psychiatry residency are not usually very popular so you have a better chance but you will have to live where you get selected and if you are older the hospitals usually don’t want to invest in retraining IMGs. Not sure if it will be the same for psychiatry. Overall you are probably looking at 7 years minimum until you can be a practicing physician again If everything goes perfectly.
You would need to qualify to immigrate first either through express entry or your child sponsoring you.