It's helpful to get in the habit of creating meal plans for two reasons: it keeps your meal rotation interesting and ensures that you get all the nutrients you need. Without a meal plan it's easy to fall into bad habits such as reaching for a premade frozen meals, or using too many unhealthy vegan meat substitutes. Remember that eating vegan doesn't necessarily mean eating healthy - there are just as many unhealthy vegan foods as there are regular foods. To eat healthy one has to commit to cooking homemade natural foods as often as possible. It's okay to take it easy once or twice a week but anything more than that can lead to weight gain.