How to go vegan and stay vegan

I tried many times to go vegan. The reason I wanted to do it was that I heard that it is healthier, your skin is going to look better, you are going to have more energy and get fit. Well, I thought this is great and what I need. I wanted to be more healthy but I didn‘t know where to start. Veganism seemed easy enough – no calorie counting, macros or whatever, just don‘t eat anything that contains animal products. Not very complicated.