my best and worst collecting disseions?

I started the year look to complete some of my collections, such as my PCGS Sacagawea dollars and i did that as well as completing my state quarter collection though i did not complete my Franklin halves i did manage to add to my collection and i hope to add to my lincoln cent collection with the release of the four new lincoln cents next year? AS for my worst decision was the purchase of an sgs graded coin.