Funny and heartwarming but must be gripping

[myotherusernameiswittyandgreat]

My attention span isn't great I usually like thrillers but I am after something a bit happier.
I loved ps I love you but I've not read anything like it since. I tend to stick to the same genre and need a change.
Does anyone have any recommendations?

Have you read Me before You by Jojo Moyes?

One Day?

Elizabeth is Missing by Emma Healey. Might not sound funny form the synopsis but I thought it was funny while being quite touching in parts.

When god was a rabbit.

Anything by Marian Keyes.

A Man Called Ove by Frederik Backman.

Thank you, that will be plenty to get me started. I've already started looking at Amazon

What did you choose?

Carter Beats the Devil - by Glen David Gould, I think. Long but meets your criteria, I couldn't put it down.