How do I find the right stock image?

Can you help me with a workflow, methodology or suggestions to find the right stock image for the publication I work on? I feel like I suck at this.

My publication has all kind of parameters for appropriate images, so the flood of stock images is daunting.

For example, today I need to find an image that jives with the title “Come As You Are” and the message to show up and feel welcomed even though your situation is far from perfect.

I use Thinkstock.com.