Approaching Two

Me & my daughter are very close.....but she is now approaching two yrs of age, and I can see subtle changes in her. She is starting to challenge my authority. If I correct her, ask her to do something, she just looks at me like yeah, and what are you going to do about it if I don't? I have put her in time out and she knows she is in trouble then, she'll hang her little head and say "Soshie in trouble" I'll tell her yes she is in trouble and it breaks her heart, and she'll start crying. Which in turn breaks my heart, now I fully understand what my parents meant when they said "this hurts me more than it does you". I used to think bunkass, that's poop!! But I so get it now. I know in life she is going to experience a lot of hurt, I never wanted to be a part of that. But little did I know this beautiful baby would challenge me the way she does. I know I have to correct her, make her pick up her toys, and behave....but why does it have to break her heart? I don't ever want her to experience any hurt, but I know this is a necessary part of life. I just hope she knows or will one day realize I only have her best interests at heart. It's like my Uncle always taught his children. Not everyone in this world loves you like I do, and everyone doesn't have to like you, so don't give them any reason to not like you right off the bat!! My grandmother always said, I'm here to your parent not your friend, to her children, but she was their friend. They just didn't see it that way until later in life. I want to instill this into my daughter early on in life, I know she probably won't "get it" until she has children of her own, like me. I hate breaking her heart by disciplining her, but I know it must be done for own good.