help for my laser project

Hello everyone thank you in advance for your answers, I know this forum from another forum Italian.

I have a green laser from 150mV I built a circuit based on LM317
follow this project




al seguente link
http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html

unfortunately my laser flashes intermittently. I powered my circuit with a 9 v. .. how to connect the laser turns on and turns off immediately after.
can someone help me?


I would like to use it, but since I know little about electronics I do not know what to do.

Can you help me?