I climbed out of Bronze as support Soraka. Still climbing.
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The key is understanding that you are not there to get your ADC ahead. They are in bronze, they likely are not very good and probably won't be carrying any games without your help.
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Understand getting kills in lane is a bonus. It is now your main objective. This is why Leona supports and such I stay away from. IF you don't succeed in getting kills, you are very weak late game.
Play to win the game not the lane. I play Soraka and if she is banned I play Janna. Soraka carries bronze baddies. Your healing and sustain compensate for terrible players. Most people don't know they are supposed to kill you first and as long as you are not standing in the front line you get to heal your teammates in fights.