i think you could get a fair amount of money off freediving, in terms of sponsors and the sort. but considering your going to be using a boat, equipment, gas, ect. you sort of balance out with the money. a freediving INSTRUCTOR on the other hand would make enough money to live an okay life, but indeed nobody has really gotten into freediving for the money, unless it was a chick, which just HAD to spend money (i never said which way the money flow with you ladies!). shopping deprivation i would imagine

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and the ADD thing, indeed oils are good for it. technicly i have it as well (and my name is Matt too! COOL!) but i think freediving has given me the mental strength to cope with it, and ive been able to suppress it.
welcome to freediving (and the site i believe)
best of luck -Matt