It's not easy being homeless, but you never know when the possibility that it could happen to you might be there. Losing your job, your home, natural disasters, illness, disability -- the opportunity might present itself at any time. Being homeless is tragic, and an all-to-common issue in the United States.
Get rid of everything you don't need for things that you do. Trade what you can with others to address your needs. For example, if you live in a wintry state and need a reliable winter jacket, trade something you don't need with another homeless member of your community that you trust for a jacket of his. Go to local thrift stores or charitable organizations and see about trading items you don't need for things you do there.
Find food resources. There are various soup kitchens in any city. Visit your local churches to see if they provide donated food to homeless people. Visit your City Hall to find out what food resources are available to homeless people. They should have a list of registered charitable organizations in your city that provide services to homeless people. Apply for food stamps with your state.
Find a shelter. There's usually a covenant house or a homeless shelter in any city. They try to keep things sanitary for everyone. Be nice to everyone you meet, for it is not only you who are suffering. Make sure to take an active part in helping out at your shelter. This will help you to keep your place at the shelter.
Look for a job to get yourself back on your feet. There are always places willing to hire the homeless, as long as you're presentable. Keep yourself clean and showered, if possible. Your shelter should have bathing facilities. Visit employment agencies and see about finding work through them, even if temporary.
Talk to a counselor. You will be presented with the opportunity to speak with one. In which case, do not turn it down. They can help you trough this difficult moment. You don't have to go through it alone. Ask your counselor to help you apply for financial aid through your county or state. Such aid might include food stamps and medical care.
Do not turn to alcohol or drugs for help. They won't do you any good.