I'm very much worried of ophidiophobia.

Hi doctor, since childhood I have been suffering from fear of snakes. I know everyone is afraid of snakes. But in my case, even a mere picture with a snake image gives me a deadly fear that breaks my mood all the day. As l live in a village, I am not able to go outside during day and night time fearing what if a snake emerges out of some bushes. I avoid sitting under any tree fearing if a snake might fall on me. I am very much cautious if happen to walk during night time. Sometime, I run madly from one end to another to reach my home. One incident happened in my life. When l was 8 or 9, l encountered a huge snake passing very close to my legs. I ran away crying. That time l felt my eyes were blacked out. I felt a chilling experience. Still now the fear is not yet gone. Please help me how to get rid of this fear.