Like do you practice any healing arts? Do you do anything with a medicine wheel? Do you cleanse or pray using sweetgrass? Or any number of hundreds of possibilities.

I've skipped all the New Age mumbo-jumbo and gone straight to the source of all shamanistic beliefs:
Entheogens.

Peyote, Yopo, Ayahuasca, quillfish, mushrooms...
The list goes on and on.
Every single plant I consumed induced effects identical to things usually associated with shamanism.
Animal totems, speaking with my ancestors, seeing God, etc.