Keep trying: It might be easy to say but you should not stop trying till you get what you want. Ups and downs are a part of life and to overcome a job loss, you should not sit at home, depressed. Instead, try in other companies and give your best.
Don't lose self-confidence: You should never lose your self-confidence if you want to survive in this competitive world.
Accept it: To overcome a loss of job, you have to accept that the fact. If you are at fault for being fired or unemployed currently, take it as a lesson and remember for whole life. This prevents the chances of repeating the mistake and cope with the problem.
Think positive: It is important to cope with the job loss. You have to think positive. Many people gets de-motivated after getting fired and this is why sit unemployed but this is not the end of your career. To think positive, think about your family or close ones who needs you.
Use your source & talent: If you have a source, use it to know about new vacancies and then show your talent. You have to be confident in the interview and never disrespect your previous company. Let the bygones be bygones so don't bring it in your present and future.
Try these ways to overcome job loss and cope with it. If you are unemployed then it is time to deal with it and get over it as early as possible. It is very important to be stable. Too much of flexibility can distract you from your goal!