The Buddha mentions five specific kinds of livelihood which bring harm to others and are therefore to be avoided: dealing in weapons, in living beings (including raising animals for slaughter as well as slave trade and prostitution), in meat production and butchery, in poisons, and in intoxicants (AN 5:177). He further names several dishonest means of gaining wealth which fall under wrong livelihood: practicing deceit, treachery, soothsaying, trickery, and usury (MN 117). Obviously any occupation that requires violation of right speech and right action is a wrong form of livelihood, but other occupations, such as selling weapons or intoxicants, may not violate those factors and yet be wrong because of their consequences for others.
So if you could find a school to teach about what you know the most, will suit for you. and anything else you like, excluding the things that are mentioned in the quotation above
I know it wont be an easy task, but think that we wont be living only on this life, there will be more to come and there were more that we've already passed in our long journey of samsara. So what ever you do right will be there for you along with your samsara. Hope i atleast gave you a fair answer
We die someday.