Strange though it may seem, you should cherish the fact that you worry about this, because so many in the people in the world have no idea what it's like to have that need to create something. That need for artistry and output. Most people don't know what it's like to have a head bursting with ideas which need crystallisation, whether it's in paint, in words, in a photograph.

Every other person I meet claims to be a budding photographer, many of them buy an expensive camera, some even take some photos. But almost none of them have that need to. Almost none of them have that burning thing inside which you have - that which makes you stress out about not creating the images you want to create, and worrying about what stops you. It's the side-effect of creative genius.

As for your fears - it's never about overcoming them - because that suggests they'll go away when you get your head straight - it's about overriding them with stronger emotions. If, at the moment you want to press the button, all you can feel is the fear of the situation and the anxiety of that moment, then you can't move forward.

You'll probably never lose that feeling which rises up and wants to block you the moment you want to act on the impulse, but you have to drown it in the feeling of success you'll have from taking the shot. The retrospective pleasure you'll have for years to come on the picture you take, just as you have with those stunning images above.

Instead of beating yourself up about it afterwards, you need to learn to beat yourself up at the time. In that instant when you need to make a decision to take a photograph, and every fibre of your being is making you chicken out, you need to jump forward in time to tomorrow and think about how annoyed you'll be that you didn't bother.

You have to harness that feeling of regret from the future, and tell yourself not to live a life of missed opportunity. There are far, far harder things in life than taking a photograph, and far, far more risky things to do. You'll feel fantastic afterwards, and you'll be able to use that to make the next photo ever so slightly easier.

Good luck.