Sufficient Grace

My key was given to me by a good, old friend. It is stamped with the word "GRACE".

I have been searching for the meaning of this key. I've had it for about a month, and have been trying to figure out what "grace" even really means. I been in a deep depression for the past couple of weeks. I have horrible self esteem and have been searching for a lifeline to bring me out of my sadness and self loathing. I went to church last weekend, mostly out of respect for my mother and grandmother, who are very religious. I wanted to show them my support and so they don't feel they have to pray for my "damned, nonreligious soul". 
During mass, "grace" came up several times. One particular quote really spoke to me. 

"My grace is sufficient for you, for power is perfected in weakness." 

It was my AHA moment--I'm human, hello. I'm weak but its ok because there is love all around me (family, friends, maybe even god) that will sustain me in hard times. 
Thus I am passing on my key to another that is having a difficult time and could use some grace.

- Megan