If you've done all this before, please forgive my repeating your own thoughts back to you.
First, I hope you're not feeling guilty or under pressure in any way. Certainly, in the town near here, some takeaway meals are made, to my personal knowledge, with fine ingredients and by a group of people with excellent understanding of health, fitness and nutrition. I'm sure this is repeated near you — at least, let's hope it is.
Second, is it a matter of planning? One of my day jobs is utterly unplanned and reactive, yet pressured, so to have the certainly of having planned which ingredients are going to go into lunch or dinner, many days ahead, is a beautiful oasis of calm for me; and is a visible form of respect for my own well-being and those who may share food here. How is your own planning?
I hope you never feel low about using takeaways (the workers there deserve their wages) but your meal planning will change not only when you are ready for it, but also when you truly want it to, from the inside out.