How do you turn a house into a home?

I have been living in the same house for 3 years now.
It still doesn't feel like a home.
Yes it is comfortable to live in.
Any changes that I have made to it feel temporary.
I have not got around to painting it.
I do use every room but it feels like I don't quite own the place.
I have got this place fully furnished but it some how feels like I am living in better student accommodation rather than my own home.