More clear: what are the neurotransmitters we talk about all the time actually?

Not al monamine neurotransmitters are good for you.

Here clearly what every monamine neurotransmitter does:

dopamine: neurotransmitter and hormone, precursor of norepinephrine and epinephrine, which are made out of hydroxylering. Dopamine plays an important role in the feeling of happiness, well-being and pleasure. People with Parkinsons don’t have enough dopamine. Also with ADHD and Schitzofrenia there is not a good balance of dopamine. 

norepinephrine: is a bit like epinephrine. Not enough norephinphrine causes depression, but too much causes euforia,  anxious, tense and excitement. Norephinphrine is used for Depression. methylfenidaat of atomoxetine are used to slow down the norepinephrine .

epinephrine (adrenaline): appears when there is stress, fear, anger, pain, extreme cold. Can be harmful, when there is too much for a long time, but is sometimes used to have more energy and to become alert. You can become addicted to adrenaline. When your brain quickly makes a lot of adrenaline, it is a part of a fight and flightreaction.

histamine: neurotransmitter in the central nerve center and has a function in the defense system of your body. Can be found in food that consists a lot of proteins, like fish, cheese, meat, sauerkraut and some sorts of yeast. Histamine can be found in different parts of your body, for example in the tissues in your body that have a lot of contact with your surroundings, like your skin, the lungs and in the alimentary canal. Histamine regulates the sleepingprocesses and makes us alert, especially in new situations.

serotonin: works as a regulator for the dopamine-system and had a big influence on your mood, confidence, sleep, emotions, sexual activity and appitite. Serotonin also plays an important role in processing pain. To make serotonin, you need ‘aminozuur’ Tryptofaan, which can be found in chickpea’s, milk, banana’s and chocolate. This tryptofaan will be converted to Serotonin by enzyms.