Trust the process.
That's what I had to tell myself every day early on in this journey. Heck, I still have to tell myself every day. I've had to learn to avoid spending all my mental energy on the results (or lack thereof), because it's simply exhausting. That mentality has made me give up way too many times in the past. Part of me still wants to throw a tantrum because I only lose one pound a week.
Instead, I focus my energy on making healthy choices every day. Not for the results, but because I need to feel better. Because I want a fuller life. Because I want a longer life. I'm stubbornly sticking to my guns in order to improve myself. There's no quick fix; it's a process that takes a lifetime. Even once we hit goal, we're still a constant work in progress. And time is going to pass anyway. Taking steps in the right direction won't get you there instantaneously, but it will still get you there.
So trust the process.