Recovery is often unstable. It is not a straight, flat path. There are valleys and hills. You might have to cross a river and climb hand over hand to reach the top of the mountain. Don't worry. All the scenery is building the strength inside of you.
Recovery doesn't mean you are always doing good. It just means you're still fighting. You might get stuck in a depressive wave or have medication trouble. The road ahead might have fog so thick no light can make it through.
Keep fighting. Fight for the next good day. This is the hard part where trust comes in. Personally, I don't trust easy. PTSD killed that for me. Luckily it was only mostly dead and my therapist and I are coating up a miracle pill. (If you don't get that reference you need to take a step back, re-evaluate your life, and watch The Princess Bride)
Trust that the good day will come. Trust that there is happiness ahead and that you have warriors fighting beside you.
It can sometimes be hard to see those fighting with you. If all you can see is those who have left, take a step back. In the event that you have no one, know that I am here. I am fighting right beside you.
Fighting for the next good day.