hello, welcome. some of the most basic things you can try are an aura cleaning, and working with psionics in the form of Psi balls.
for aura cleaning, sit back, relax for a bit then breath in. as you breath in imagine sucking in a golden light, then exhaling a matte yellow light. do this until you exhale only golden light then you should be good.
Thats one basic way, and there are many. search around and find what fits best for you.
also pick up some form of meditation.
Search around on here, ask more questions and take it at your own pace.