I am the parent of a 14 yr old and 10 yr old....both girls. I am challenged at parenting most days...at least in the eyes of my children. I cant seem to do anything right anymore, I have gotten stupid with the years, and I am too old to be "cool" around my kids. When did that happen?

Life with a teenager is challenging to say the least. The mood swings, the attitude, the nasty mouth, and the defiant behavior. I didnt raise my kid to be this way, did i?
This "parenting" thing sucks. This isnt what I signed up for.
Yesterday was the last straw, actually it was the day before. My 14 yr old has become that which I swore I would never raise... a lying, manipulating, sassy mouthed, entitled little twit. I put her in God's hands last night and went to bed. I have asked for guidance when dealing with her today. I will need the strength to follow through with tough love today, telling her she will not be going to the rodeo today. I dont foresee any other solution. I told her that there would be no more backlash if I let her go on friday night, but yesterday she proved to me once again that I needed to follow through with what I said I was going to do.
Tough love....who is it really tough for, anyway?