The process is one of revelation of mutual needs. First impressions overwhelm or even foreclose second impressions. Decide what you want the other side to know or understand about you and then make sure they get that idea. Then test to make sure they got it. Do something to relieve the stress of job hunting.
Regular exercise is one way to do it.
A good power walk or a workout three times a week will break the spell of constant fretting about not having a job. Some other activity may work for you. Do it or ultimately face depression and burnout. You are responsible for researching each target regardless of the source of the job lead. Surround yourself with upbeat people.