Get a job, at the very least, or add another source of income. If you don't have extra cash to risk on a highly volatile asset, you can't just buy bitcoin. In addition, exercise discipline in all financial decisions, just as you would in any other area of the market for investments. And more importantly, improve your security and privacy to protect your hard earned money.
That is how you stay in the long run.
You should have a stable income in the first place if you wish to invest and stay long term with bitcoin knowing bitcoin will never guarantee as a source of living. And its price will always be unpredictable so if you are just here for quick profits, I should say that it wont work in bitcoin. Also, investing in bitcoin also has a high risk and if you are not ready to lose, its best not to invest in bitcoin and focus on real in demand businesses offline.