Hi Tom,
Proverbs 16:20, James 5:11, John 13:16-17 all talk about being happy. Paul even talks about, "...who will make him glad....." (llCor 2:2). There is also the verse: "...this is the day that the Lord has made,let us rejoice and be glad in it". It's not a sin to be happy or to love yourself. "....love your neighbor as you love yourself....(Matt 19:19).
When we want our own way instead of God's or we think we are better than others, that is when we are exalting ourself.
Getting zits is just something that happens. You feel bad about the way you look but that's just a normal reaction we all have when these things come along.
Enjoy your happy days. They are a gift from God.
laura