I have been working professionally for 3+ years in a single company. I've been lucky to have got this job without a test nor interview ( I was an intern there, and they offered me the job before my intern period was up). Recently, I feel bored there and tried to apply to another company. Currently, I am in the last stage of the test and it seems I will be able to pass it. But, I feel nervous to actually change my job, because this will be my first time changing workplace, and I don't know if I will actually be accepted there (there is a probation period of 3 months). Reading this thread makes me re-realize that changing jobs was not an unusual thing. Thank you for sharing this.