drowning in my emotions

when I was younger I was very expressive about my emotions but was taught that that was wrong and was weak so through the years I buried them. but now I see its a very unhealthy way to live because I feel like I'm not allowed to feel sadness because people view me as "emotionless".. that's a word that my mother and sister have used to describe me countless times and it hurts me because I know I'm not. I know I have a lot of love to give. I just don't know how. I don't know how to express myself and it's killing my personal relationships and I really want to change. I have to change. please help me!