To a certain extent, your choice of marketing methods is irrelevant.  Some will always work better for your business than others, and some will better match your budget and time constraints - fortunately (otherwise I'd be out of a job).  But the key to success is selecting three or four different methods and using them consistently for 90-days.

You need to monitor your success carefully and then maybe tweak the plan, and go again for another 90-days.  Don't be tempted to change the plan half-way through - just stick with it.  If it isn't working, you aren't doing enough numbers. 

For example, you may select direct mail as one method for building awareness of your company.  You might decide to send out 400 letters every day for ninety days and monitor the response.  Those letters may generate 5 calls per day and 2 new customers (the numbers will be different for every business).  But - if you do something often enough, a ratio will appear - that is the law of averages.  

If you get two new customers every day from letters when you're sending 400 out per day, you now know what you need to do if you want four new customers per day.