How to maintain interest in finding jobs while working?

I understand that:

1. I am feeling miserable due to the lack of direction my company has.
2. This was already informed to the manager, who made some measures to address but it was fruitless as upper management is not on board.
3. Office drama is highly involved in my line of work, and I want something of a job that is less personal.

Accordingly, while I try to look for jobs, I usually don't get any callbacks, or if I do, I start to feel apprehensive and doubtful if I should pursue it, even though I am the one who applied for it in the first place.

How do I maintain interest in the job hunt while working my current job? Otherwise, I deserve the [hell] I am currently in if I can't find a new place to work at.

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