The best way is : FM 21-76 US Army Survival Manual - it's real. With some military experience and a solide education und some practise - there are a lot of chances. Risk that is the sugar of the live. You have freedom - this is the most important.
Normally - freelancer in no good way for two or three years past study. It is good in old Europe you are a middle age boy. The shunshine boys from Harvard were the super specialist from Yeltzin - the problems we have today in Russia.
Read Clausewitz and US SF manual - you that today there is an economical global war and as freelancer you are a fighter not civil servant.
And don't forget: the first target of a freelancer is not money - it is sucess!