Vegetarian is totally doable and should not be a challenge at all. The vast majority of my animal based proteins are from eggs and fat free greek yogurt. I do eat meat, I alternate a different type for dinner every day but the portions are honestly nothing at all heavy. I like ground bison, chicken thighs and salmon. I'll occasionally have a nice steak or very rarely will have a hot dog, meat lover's pizza, etc.
Vegan on the other hand is not really something I'd encourage. One, it's not at all difficult to develop some nutritional deficiencies and you will have to rely on supplements, particularly B12. Unless you are taking protein powders, your protein sources will either be very high in carbs or high in fat. It's just not a great diet to have overall and you'll struggle to make it work, not just physiologically but in regard to even just enjoying food.