The more you cut certain foods OUT of your diet, the harder it is to get the nutrients you need and the more vitally important it is that you eat everything you CAN eat on your diet. Your health cannot afford you to be picky about the limited variety of foods available for vegans to eat.
As a vegan, there are two primary concerns IF you want to stay healthy, feeling well, and retain the physical strength to participate in life.
(1) Getting enough protein. Yes, vegetables have protein in them, but the only veggies that have ENOUGH protein to keep you healthy are legumes (black beans, garbanzo beans, lentils, etc), brown rice, quinoa, tofu (made from soy beans), and seeds & nuts. And these tend to be high-calorie and fattening.
But unless you get enough protein, your body will start consuming itself, breaking down your muscle to get the protein it needs. And that is when you start to become weak, even to the point where being a couch potato is too strenuous for you.
So you will be eating a LOT of beans and rice .. 5 cups, combined, per day.
(2) Even eating properly on a vegan diet, there are some critically important nutrients that are available only in meat, seafood and animal products. As a vegan, you will have to take daily supplement of:
vitamin B12, calcium, iron, and zinc
It is good to be vegan, but not if it kills you.
The GOOD news is that if you MAKE yourself eat foods you don't like, and if you tell yourself that you are taking care of your body BY eating these foods .. that within months of a few years, you will start to LIKE these foods.
Our body likes what it has become used to.
So you CAN and MUST learn to like bell peppers, cucumber, and zucchinig.
Since your vegan diet will have daily legumes and rice, which can be fattening stay away from pasta. And when you DO indulge and have pasta, make sure it is a whole-wheat pasta only.
When you limit your foods, it becomes critically important to eat ONLY healthy foods.