Hey @stopbeingafatty,
congrats on your success! Another nice effect on healthier food: You should feel better. More energy, better digestion, better skin etc. Maybe you could use this fact as an additional motivation.
I think changing your habits is very important and not that easy! If you do something new/different for 20 times in a row (example: taking a cold shower every day) it becomes an habit. Maybe you can use this rule of thumb for your next steps.
Speaking of cold showers: They are supposed to be very beneficial if you want to lose weight because the cold water helps to burn the "brown fats".

I lost a lot of pounds myself through changing my habits. The better body feeling by reason of the healthier food was a huge motivator. I felt bad and tired after a big, fatty meal or an oven-ready meal. I reduced meat to one time a week and increased the amount of vegetables. Another problem I had was wheat. It has a lot of energy but not much else useful for the body. I felt pretty heavy after eating wheat products. So I reduced them as well with huge success.
The body feel was the motivator I was missing until then. I wanted to loosing weight but couldn't stop to eat all this delicious stuff. Now I know it's only delicious for some minutes, than comes the bad feeling.
I'm still having problems to maintain my healthy diet on weekends where my schedule is different and I can't form easy habits. Next I will try to change the meals in very small steps like you.

I wish you all the energy you need to continue your journey!