The first time I watched it I hated it. The main character reminded me too much of my NPD ex who tried to nitpick and mould me into someone he wanted to love, not who I really was. Then all of that went down in flames, I got together with current SO, got diagnosed, and then one day found myself wishing I had Calvin's ability... and realized that there was probably more of myself in Calvin than I had originally realized, so I rewatched it. 

I don't want to spoil too much for those who haven't seen it, but damn, the ability to ensure my SO would be miserable without me? Although I would also wish to have the ability unbeknownst even to myself because the knowledge of it would make whatever happened "not counted".

&gt;  Calvin: I have you. I don't need anyone else.
Ruby: That's a lot of pressure.

"I'm sorry for every word I wrote to change you. I'm sorry for so many things. I couldn't see you when you were here, and now that you're gone, I see you everywhere."

I thought it was a great kick in the shin and a reminder for me to see SO for who he is instead of who I want him to be, or who he can be for me. 