Your palate (or taste buds, or whatever gives you the sensation that you're eating something tasty)
does change. If you eat like a vegan for a week, you will find that vegetables begin to taste better than you thought possible. Animal products are full of fat, which overpowers one's taste buds and prevents one from really the subtler and fresher taste of vegetables. But you have to actually avoid all animal products for a while to feel this effect.
Lebanese and Greek cuisines have a lot of tasty vegan dishes. If you have Lebanese and Greek restaurants near you, try going there for dinner sometime, and ask for their vegan options. And buy some vegan cookbooks. All this will expand your ideas about what dinner needs to look like.
If you find, over time, that you're having trouble going vegan all at once, you can remove animal products one at a time, in something like the following order:
- pork
- chicken
- eggs
- milk
- beef
- seafood
- cheese
This list is based roughly on minimizing animal suffering, while leaving until later the foods that are harder to let go of. Of course, the goal should be to eventually get to a point where you're no longer supporting the factory farm industry with your hard-earned dollars.
In my case, I was able to go vegan almost overnight. The first time, I lasted four months. The second time, many years later, I was able to stick with it. In the early days, I read books about factory farming and veganism to keep myself motivated. At the end of every day I was vegan, I would remind myself of how many animals I had saved that day. It gets easier the longer you've been vegan. After a while, you find you no longer even have to think about it; it becomes automatic.