I somehow lost my powers

A practice I have heard of being conducted by monks is the empty cup mind. If one continues to fill the vessel of the mind when it is full it will overflow. A good practice is to disregard all previous knowledge when learning of something new. By shutting out the I can't do this imposed by society you can better focus on the I can.

I just think you need to meditate and focus. A lot of things and answers we seek are usually found in a meditative state (btw prayer is a form of meditation as well, if that helps). Energy manipulation plays a major part in almost everything that is attached to magic and spells. If your desire and goal is to regain or strengthen abilities you feel you have, that is the best path to take.

In regards to environmental and elemental manifestation of your abilities, it could be a powerful imagination. Not to discredit how you feel, but that type of power is extremely rare LIKE EXTREMELY rare. And if you had that type of power at your disposal, you wouldn't be having these problems of being blocked.