Bad mood

Today i'm not in a good mood. My heart was really really frustated for what just happen today. I feel that i'm not be appreciated for what i did and done. People just come and leave like that. No word even a thank you. Is it just a normal thing happen in our life? If it is..why do i feel terrible today? Coz i've sacrificed a lot for this person...money, time and most of things even my heart...In other word..I could do anything just for her... But today..she just leave like that..without any words. Even goodbye. Hmmm.. I think what i did was not enough to make people appreciate and notice what i did. I'm not seeking for attention or appreciation..just a little acknowledgement. Should i regret for what I've done or just surrender to the situation and back to my normal life..seeking a path, creating my damn own life.... -dead-