Hi yuyu,
They don't really need any special help other than praise. I usually set mine at their workplace and when they start working I praise them with the glove. If they fail and start to walk away I put them back at their workplace. Then when they succeed if they start to walk away I pick them up and put them back and give them a piece of candy or fruit (Fruit is the best as it gives them energy. It also will improve their health if it is low.). Generally after that I usually don't have to do anything else. Most of my peeps reach Master 8 by the time (or before) they're 35. Praise is much more effective than the scolding glove. Just make sure you buy every piece of fruit and candy they get in their store to have it on hand. I always make sure there's a supply of it, when my peeps get old enough to die, to train the next generation.

One more thing yuyu; buy the workbook or magazine's for the profession of your ladies. Sometimes it puts them up a whole level and sometimes just a little bit. Though they're definately worth the money. You can use them on them every time they get them in the store if you want to.