The adventure of finding a job

Since the current crisis began several years ago putting a strain on employment, it is said that who has a job, has a treasure.
Taking as example some countries of southern Europe, such as Greece or Spain where the unemployment rate is so huge/high, many people may agree with me.

Once you have been fired or given the sack/let go unexpectedly, the task of getting a new job can be really hard..

given the sack-- tu escito es sobre un tema serio, no usaría expresiones coloquiales. Podrías usarlo más tarde, cuando estés seguro en un puesto, y puedes olvidarte de cuando "they gave you the sacl."

- Firstly, you must update your CV and send it to every single company that might offer you a job according to your skills. For certain jobs, it might be a great idea to adapt your CV to that offer in order to make it more attractive.
- Secondly, if you are lucky and they phone you for a job interview you must prepare for it and you will have to exude confidence when interviewing to assure that the interview  is successful. Also you have to take into account that it can entail some expenses due to the the fact interview might take place in another city different from yours. Needless to say that being an unemployed travelling is painful for your pocket.

- Thirdly, it often happens that even if you are very well qualified, the job can unfairly go to another less qualified person who knows the decision maker, but do not despair you will probably end up working in something which you are overqualified for, but it is fine, because as I said before, nowadays he (or she) who has a job has a treasure.
To sum up,
It is the real life where the people are not able to take advantage of the talent which surrounds them. no estoy seguro de entender la última frase