Hope.

My current boyfriend is this person for me. It took a long time and absolutely WAS NOT easy to get here. He didn't understand my depression, sometimes he still doesn't. He left me at one point because my thoughts of suicide and low points were too much for him to handle and he was scared. Ultimately though, he came back. He realized that he would rather be there for those moments and love me through those times than have me be alone. Him being that strong for me makes me feel strong enough every day to be physically here for him. The negative thoughts and low points will probably never cease simply because that is the depressed brain, but he gives me motivation to fight and to be better and to take care of myself. He loves me through everything and in turn teaches me to try and love myself best I can.
Don't give up, don't settle, and don't ever think yourself worthless or unloved.