1. Be more obedient to self-proclaimed "experts." They know better than you or I.
2. Talk about yourself a lot: how much money you make, the dangers you've battled in your lives, your education, things like that. It signals that you're secure people. Also, compare your abilities to others a lot and if you get the sense that someone might have more than you, make sure you point out that they really don't. Again, it portrays a sense of self-assuredness and security to others.