An analogy:
So I write a lot of letters to a someone.
But everytime I write them and give it, I'll think if the person actually appreciates it?
For me, I love to receive handwritten letters.
I always imagine that if I were to receive letters, how happy I'd be.
And I thought the same happiness I'd feel might apply to others.
But I realised, maybe not.
I just can't apply how I want things and how I'd like things, onto others.