Approximately one sale occurs in three sales calls, and one sale occurs in ten cold sales calls. They know in their head that they will receive rejection and are prepared for that possibility. They do not take rejection personally. They keep on making calls and contacting prospects. Translate all this into job search terms and it makes rejection in the job search less personal.
Most people realize that.
Not every interview will be successful. There are many, many reasons for not getting an offer or second interview, many of which are out of your control. If you do your best in an interview by being well-prepared and giving a good presentation, that is all you can do. If you are getting screening calls, but no interviews, you may need to practice you telephone interviewing skills. If you are receiving interviews, but no second interviews or offers, then maybe you need to brush up on your interviewing skills or take more time to prepare for the meeting.