I use this gentle discipline 5 step method, but I usually only have to 3 steps;
1. State what you want, i.e. 'Time to get out of the bath tub'.
2. Repeat request getting down ontheir level looking them in the eye- give them something to look forward to; i.e. 'Get out of the tub, now its story time!'
3. Say, 'Can you ___ yourself, or does mommy need to help you ___'
Use the phrase consistently each and every time. So in my example I would say, 'Can you get out of the tub yourself, or do I need to help you out.' Sometimes I count 1,2,3. Either way, you are making your words happen.
4. If they still aren't following directions, say, 'You are having trouble ___. Mommy will help you now.' And then I would take her out of the tub, or help him put the toys away or whatever else you need to make happen.
5. Bear Hug. If total meltdown happens, and you need to keep him and others safe, get behind him and hold him until he calms down.
Check out http://aolff.com/?page_id=6 for more info. If you use the same wording consistently and follow through consistently they will start to understand that what you say has meaning and you will make it happen if they don't. And at two they want to do things all by themselves so this can work to your advantage!
Good luck!
T.