This is when the, "No" days begin. They begin defying you in the most annoying ways. They learn the power of the word & how much it drives you crazy. Best way to deal with this is by offering choices. "Do you want green beans or do you want squash?" Otherwise you will be in for a battle. Totally normal. They're just trying to establish some independence & their own ideas, for themselves.
The terrible twos can only be as bad as you perceive them or let them be. You can handle the toddler better and make the whole experience a whole lot more bearable. For instance, you need to set limits and limited choices and establish a given routine for them to follow and you will be good. For more tips, visit http://pediatrics.about.com/od/toddlers/a/05_terrble_twos.htm.
I haven't heard of anyone having a worse experience than I had with my first daughter but with my second I'm pretty sure they never came my advice being that your asking your probably already a great mom who's over protective and loves your kid more than anything and just wants everything right so relax don't worry you'll know what to do and if not every parent around you will give you advice you don't even need when the time comes cause you'll already know what's best even when it's last min mother knows best was said for a reason