The people who have signed up for your list have probably done so because they want to learn more about what you have to say. They would not sign up if they weren't sure they could learn valuable information or gain some insights for doing so.
That's why you should present yourself as an expert at all times. That doesn't mean being “cocky” or giving out false information. It simply means relaying information you deem important, and knowing that the advice you're giving is in the best interest for the members of your list.
People trust and look up to experts. Your relationship with your list will grow stronger than ever as you share your expert strategies, tips, and tricks to help your list members.