This is my procedure for choosing a keyword that I know I can dominate:
1. Place your keywords within quotes in Google such as "dog training in houston". If the competition is less than 50,000, it is a good keyword to target. For this example, "dog training in houston" yields only 11,200. This is gold!
2. Now type in the search query: allintitle: such as allintitle:"dog training in houston". If the competition is less than 10,000, Go For It! In this example, allintitle:"dog training in houston" yields only 146 competitors. I can easily rank #1 for this keyword.