The end of another year fast approaches

It's hard to believe how fast this year has gone by. And I'm not really sure what I did to pass it. Did I do anything significant? Did I accomplish anything? Did I learn anything? Did I experience anything new? Did I help anyone else? Did I give any significance to my existence?

I fear not. 

But what should I have done? I basically don't believe in having regrets. Obviously we have them and I've regretting doing or not doing something. But I always fight against that tendency to dwell on those. I think regrets should actually be treated at lessons or experience. So I ask what I should have done in order to determine what I should do from here on out.