/sci/ - Science & Math

Hi!
Recently in newspaper I have read about the hormones of happiness. The theory itself is just interesting, but the consequences are exciting! Namely, there are three such hormones:
1. dopamine signs immediate pleasure. Think alcohol, smoking, sugar, some drugs
2. serotonine signs general feeling of comfort. Think being in your comfortable situation. Writer said that this feeling may come some time after eating bananas, tomatoes, black chocolate or nuts, too!
3. Endorphine softens pain shocks and gives feeling of euphoria. Think pregnancy, fighting, or working out!
They form the mood if they are present in brain, and stop doing it after decomposing!
The article gave some examples of situations when these form, but it didn't contain any practical applications of this knowledge. Am I missing something, or there is actually a way to alter ones behaviour by stimulating generation of hormones in some situations?!
For example. Take theoretical school student. Feeding him/her tomatoes before doing chores should boost generation of serotonine, making him/her comfortable-happy with process of mopping. Giving candy after finishing it will boost formation of dopamine, making him/her glad for accomplishment of tidyness. Is this right or I am missing something? Will these feelings bind to the activity, or just food? Will this association last after stimulation stops?
Most notably. Is there a book on this subject, with practical recipes and no requirement for background in medicine or biology?