Times goes by----So slowly 

Past 10 years was not bad. But I'm not fully satisfied. I achieve many things as well as missed many additionally I'm trying to achieve what I've missed in my life

It just gets better and better.

I think Fleetwood Mac capture the emotion well in their song 'Don't Stop':

Why not think about times to come,
And not about the things that you've done,
If your life was bad to you,
Just think what tomorrow will do.

I am satisfied about my life. My life was very satiated and interesting with much achievements and joy.

I discovered for myself very mush interesting sometimes disappointed things but on the whole with positive balance for me.

Definitely it would be: "What a waste of time" :/

This year I'm trying to achieve what I wanted to achieve earlier, but it's quite difficult..