Easy. Then they may ask why it is so, and with joy I can give the answer. 1 Peter "But sanctify the Lord God in your hearts, and be ready always to give an answer to every man who asketh you a reason for the hope that is in you, with meekness and fear."
Great advice :) This is why I try to smile every day! You don't need a reason; if you think about, you probably have a million reasons anyway. Most days, I try to smile just to smile :) Not that it's always easy... but it's worth it when you can!
If someone seems to not care about hurting your feelings - you can decide to forgive them. Move on because any grudges you carry will hurt you more than them. Use that energy to plan and prepare for the life you want to live and dream of. Remember this...you will want forgiveness too one day. Don't let the little things hold you down or make you always upset.