When the brain is excited everything is all around better, learning is faster, training is better, socializing is easier and thinking is faster and more coherent.
For some, such as myself, however, this is not a natural state, indeed it is very rare.
I have, in the past, suffered from major depression, and while I learned to control this seemingly normal state of mind, it seems that much of my brain is still "off" leading me to believe that neuron firing in my brain may be inhibited.
Now, I have considered a number of methods for dealing with this problem amoung which are:
SSRIs: The problem doesn't seem to be seratonin deficiency, which prompted me to stop.
Marijuana: While it does help with the depressive mental states, it only replaces them with vegetative states which is not optimal.
Cocaine: Ruled out due to high costs and risk of addiction.
Various epinephrines: Ruled out due to the potential shut down of natural epinephrine production in the brain.
All these drugs are seemingly unworkable and in fact, music is the only thing capable of producing excitatory responses in my brain, though they happen rarely and seldom last for longer than a few hours, however the very fact that they happen may be indication that a more permanent excitatory state is possible.
Furthermore, I would like to place what you've read thus far into context, I am not looking for a permanent "high" which you might associate with some of the aforementioned drugs, while that may be a dream state for a drug addict, it is not for me. I am simply looking for methods with which I may increase the excitability of my neurons to a point which I deem acceptable for daily life.
Whether those methods include psychoactive drugs, psychtropic drugs, dietary plans, meditation or any other method I may have thus far not thought of.
In conclusion, I would appreciate any scientifically founded information or useful methods on the matter.