I have just started working fresh out of college and don't have much experience in job hunting. But I will share what worked for me when I was in college looking for jobs.
In my opinion these are the top three qualities which we must develop while hunting a dev job.

1. Insane focus : work hard. Learn stuff. Complete lessons, projects. Do not deviate from the end goal, and work towards it.

2. Resilience : Don't lose heart over few bad interviews. Keep on trying with the same zeal.

3. Incorporate feedbacks. Don't be stubborn and arrogant. Look out for learning opportunities from any circumstance.

Best of luck