When it comes to asking for raise, you just have to do it in the right way. You may get a no, and that's fine, but ask and make sure you know when you can come back and ask again.
It is better for you to take responsibility for your life as it is, instead of blaming others, or circumstances, for your predicament. As your eyes open, you'll see that your state of health, happiness, and every circumstance of your life has been, in large part, arranged by you - consciously or unconsciously.