In late 2014, I was diagnosed with peripheral T-cell lymphoma, a type of non-Hodgkin lymphoma. At the time, I had no idea what that would entail or how it would affect my life.

Here are five things I learned after going through treatment.

1. Surrender to the healing process. Once you’ve accepted your diagnosis and decided where you want to be treated, it’s important to have faith in your care team. Ask questions whenever...