and please realize people are just trying to make helpful suggestions to you. They're not insisting that you do or don't do anything - they don't have the power to force you to do things you don't want.
Take the advice you find helpful, ignore the rest, and see how you do. If you're still struggling, keep what has worked for you so far, and make some new changes that you were perhaps reluctant to make at first. See how you do then.
No one has ever said that you have to cook everything from scratch, or eat only homemade foods. For some single items this may be best, for others it won't make any difference. It helps to see each piece of advice individually, and not extrapolate one thing into a blanket statement about everything you eat or do.