Looking for a new job

Since Starting a month ago, I am began looking for a new job because I am have been working in a at the same company since  for 13 years , so I would like to change everything. I went to an interview last Friday, and I am feel a little sad because I didn't get the job. so I will be looking for more opportunities.
Are there some secrets to apply in to an interview?

Ofreci unas sugerencias y no dudes en hablarme si tengas una pregunta sobre lo que hice.  

Buena suerte con los trabajos y ten paciencia.  Buscar otro trabajo es dificil y a veces, se necesita varias entrevistas.