A (serious) beginning tai chi student must remember and practice a number of things. For example: dantian, zhong ding, spiraling, structure, energy, chi, harmony, opposing force, yin-yang, mind, and spirit. That’s only the beginning.
Work on refining these things continually and you will eventually experience the greatest rewards for practicing this ancient art. Many people feel the difference even after only a class or two with a good teacher. Practice with a friend(s). Obstacles exist. Forget them.
It’s sounds like a lot. You better get started today. Look on the bright side. Have fun.