Clueless on Diets

So, I want to start a new diet seeing as I have never truly been on one, but, I really don't know what to pick. I need something that is nice and structured but, that I can do at home. I live in the suburbs of a big city, but seeing as I don't have a car it's a little hard to go out to WW meetings and things. (not even counting my crazy work schedule). So, I need something I can take with me to places like work and school and I need something that isn't so complicated I give up in a week. I really like fruits and veggies and I am always on the go so I really don't have time for extensive cooking. Thanks for any suggestions you have <3