Are you seeing a therapist? They might be able to help you look at your options.

A lot of people who have struggled go on to be great psychologists because they have a better understanding but I would be a bit concerned if you are struggling. It definitely doesn't mean that it isn't the right career choice but I would suggest you consider looking at your own concerns first. It is not an easy course and can bring up a lot of difficult topics and issues which can be hard to manage.