Still bitcoin is very profitable but not what your looking for if you want x paycheck amount every month.
Having a full time job is the safest way to have a steady income. But for me, it is not enough just to have a job because you only earn if you can work. If you suddenly became disabled, then you cannot earn anymore. For me, the best is having a good business that earns and couple that with investments. If you have those, they earn money even if you are away.
My GF has been with her employer over 10+ years and all she gets as safety if she suddenly cant work for health is 1 years cover for wages. To me it doesn't seem that safe considering you can make money online if your health is not up to sratch.