Why does 'loving kindness' practice make me feel guilty and sad?

My name is Vedant and I do what my guide teaches me to love-kindly, but when it comes to taking that energy and turning it toward myself I experience an immediate surge of overwhelming inner resistance. Guilt and sadness are soon on the heels of this block. Born 23 rd September 2004 4 AM, in Gwalior. It causes my already existent state of depression to be aggravated as I deeply feel so unworthy of the self-compassion the guide is providing. I must understand what causes this method to be so activating to my feelings.