I had a personal trainer session the other day. I've never had one before. I tell you what, I've never ached like I did after that. He had me doing push-ups until I fell face down into the floor. It was really hard but I absolutely enjoyed it.
But, if I'd been for that same session a year ago, I would have hated it. I would have despised the guy for pushing me so hard, I would have not put much effort in and I would have just walked away at the end of it, cursing myself for having done it.
Because sometimes, we're not ready to take on the stuff that others are teaching us.