First impressions matter, for good and bad. They are fine when you like someone at the first meeting; they are not so fine when the first meeting is negative. Positive first impressions lead to social cohesion; negative first impressions lead to biases and social prejudice.
If what others think of you matters, then pay attention to how others see you the first time you meet. As important, pay attention to how your first impression may prejudice you against someone else.
Now, here are two things you can do immediately to put these ideas into action.
First, take complete control over every detail of your personal appearance and grooming. Resolve to look like a powerful, influential person in all your business activities.
Second, study fashion and proper dress so you know exactly what to wear and in what combination. Read a book, take a seminar or even hire an image consultant. Small changes in your appearance can change your oppurtunities immediately.