Happiness & gratitude are blessings from God. Never allow those who have disappointed you by taking your good heart, kindness & genuine compassion for granted stop you from feeling/showing love and concern for others. In a world filled with so many damage souls. Those blessed with optimism and deep compassion for our fellow human beings need to do everything possible to spread love & light. Forgive those who have let you down, most are suffering tremendously deep down inside. Pray for their well being and that someday they might find permanent peace & happiness.