okay maybe you prefer not to answer this but how old are you and how long have you been riding? I would suggest moving somewhere you can take more lessons and challenge yourself. I am having a hard time understanding why you would buy a new horse if you were so unhappy where you board and no other place to board and no instructor, goals, etc.
(did the change in boarding situation happen the same exact time as you getting the new horse?)
There is always new things to learn and always new challenges proper instructors can present.
From what I can gather:
You had a very well trained pony and have advanced to a less trained horse
You recently had a change in your boarding situation and have no one to ride with and no instructor to challenge you or help you connect with your horse.
You are only allowed to do slow gaits in the arena and have no one to trail ride with.
I would talk to your BO and parents and tell them how you feel and look around for a riding club and/or new instructor to challenge you and see if you can resolve the way you are feeling about your new horse.
Keep looking for a new boarding place, ask at the local feed store, etc.
Just trying to help.