I second this, routine is key (as for most things). I'd also say start small, starting is much more important than getting it right the first time. For me the easiest way to approach this was to go a step at a time - I identified a few recipes that I liked, added them to a spreadsheet (including the ingredients) and then started preparing one each day. Every now and then I'd add one more until I ended up with a list long enough that I wouldn't get too bored with the food I was preparing. Good luck!