Let every shoot, event, promotional modeling jobs, casting, person you meet inspire something to lead to something bigger.
Even if you know you are better than handing out that stupid promotional flyer for 20 bucks an hour, start thinking of ways to skip the middle man and get into the door of the product you are already marketing.
Ask who the marketing coordinator is?
Ask if the brand ever needs print models?
Ask if you can submit your photos to the marketing department?