Even if others don't love you, God always does and He is above all and is the source of love and loves more than anything as His love is perfect. So there is always at least Him that loves you. But, most likely you have others in your life that love you too, even if they don't always show it and even if they have hurt you at times due to their wrong choices. We are called to love each other. "Love God will all your heart, soul, mind and strength. And love your neighbor as yourself (treat people as you would want to be treated)." I heard it once said, "you have to believe in others if you want them to believe in you."