I am still learning about all the information about vegan nutrition so that when a family member, friend or stranger ask me about protein or some other concern they might think I'm deficient in. I can answer back confidently, I believe in this lifestyle but I feel like to transition to it for me I need to become a hermit for awhile and not go anywhere besides work.
In my experience, when someone asks me about vegan nutrition, they are not the least bit concerned about my health. When meat eaters meet a vegan, they are reminded of the cruelty of their own decision to eat meat. They suffer a kind of cognitive dissonance, where their view of themselves as good and kind people clashes against their knowledge that it is cruel to eat animals. They try to resolve this by immediately telling themselves that veganism cannot possibly be healthy, that a vegan must not get all the nutrients the human body needs. There is nothing you can say to them that will convince them otherwise. It's important to them to see themselves as good and kind people, so no matter what you tell them, they will go away thinking that you must be mistaken.
This is why the most intelligent and thoughtful leaders of the vegan movement now believe that the best way to save the most animals is by being kind and understanding toward meat eaters, and by avoiding attacking them. Note that you don't actually have to say anything for them to feel attacked; your very existence is seen as an attack; and the more they feel attacked, the less likely they are to reconsider their own food choices. Just keep that in mind, and remember that you don't have to defend your choices to anyone. In fact, I feel it's best to avoid getting into arguments, which means keeping your answers short. If someone asks you why you're vegan, you can say something like, "For most of my life, I ate animals, but then I saw a film about factory farming (or read a book, an article, or whatever it was in your case) and decided that I want to live a life that is more consistent with my love for animals." Then, if they want more information, you can direct them to a web site like
https://nutritionfacts.org/. (For more information on how to interact with non-vegans, look up Melanie Joy's video on YouTube entitled "How Vegans Can Create Healthy Relationships and Communicate Effectively".)
Finally, don't feel guilty. You should feel great about yourself because you are doing something to help animals in a world that is still based on exploiting them. Every day that you manage to be vegan, congratulate yourself and think of all the animals who didn't die that day because of your choices. Even on the days you don't manage to be vegan, you probably ate less animal products than you would have previously. So forgive yourself, and try to do better the next day. It can be difficult to change one's habits, but over time, it will get easier.