Besides earning bitcoin you can always look for jobs online at freelancing platforms. There are several remote Jobs you can find and be payed through paypal. Then you can use that money toinvest in Bitcoin
but getting some good project or job on freelancing sites is very tuff work. I used all famous and most freelancing sites like freelancer, up work, odesk guru and fiver but I didn't received any good project to do. even I have some awesome online skills.. loll..
Well the people always copy past something that is already having sucess,that why you wont find a good project .
before i know about bitcoin,i have no idea to make money online,but when i know bitcoin and start to focus on it,i just found another way to make money online,it was affiliate program,but i dont stay so long on it,and back to bitcoin again.
I had a problem like yours,being at ptc,pts,doublers,cyclers and many others programs,the best deal i made were buy an account from a game and sell it.Before bitcoin i spend around 5 hours a day atleast and well my total income would be around 20 dolalrs as there were the minimum cashout,and would be needed 2 -3 months active ,i were loosing my time on them alone,the thing i can make bigger ammount now with bitcoin.