Hello and thank you for submitting your question!
It is possible this may be related to your diet; however, there can be many other reasons for feeling tired. If you have been experiencing this constant lack of energy for a significant amount of time, I encourage you to consult with your doctor to see what the underlying cause may be.
Although a well-planned vegetarian diet can be nutritious and may provide health benefits to help prevent disease, it is important to choose a variety of foods to make sure you are meeting your nutritional needs every day.1 Here is a guide on Healthy Eating Tips for Vegetarians. Some nutrients to be mindful of and plan for include: calcium, iron, protein, vitamin B12 and vitamin D. You can learn more about the food sources of these nutrients here.
We also have over 300 vegetarian recipes on Eatfresh.org. Pick one to try this week and let us know what you think!
Hope this helps!
1. Melina V, Craig W, Levin S."Position of the Academy of Nutrition and Dietetics: Vegetarian Diet." J Acad Nutr Diet. 2016 Dec;116(12):1970-1980. doi: 10.1016/j.jand.2016.09.025.