How to become a 'green thumb'

You would all be familiar with the term 'green thumb' to describe a person who is good at gardening. Well the way to get a green thumb isn't all that difficult...all you need to do is remove some of the leaves off your tomato plants. Every time I do this I get green thumbs and fingers (I do it without gloves on because I find it too fiddley/delicate of a task to do with gloves on) and when I come in and wash my hands it turns the soap an antiseptic yellow colour for about 5 minutes of washing and scrubbing with a nail brush to get them clean!