The feeling of freedom you get when freewheeling down a hill on a bike, on an empty road or skiing down an empty piste, on a sunny day. I may even shout "wheeeeeeeeeeee" when doing so
Spending proper quality time with the people I love.
The fabulous feeling of being out in the beautiful countryside just after dawn on a sunny morning, when no-one else is around and the world feels fresh and glorious.
Smiling at someone who's harrassed and clearly having a bad day, and seeing them smile back.