I am an instinctive cook - mainly from too many years of practice (im 50).
I think just start yourself off with a pledge to make something new and easy every week, one night a week. Or one night a fortnight. I love the BBC good food website, and frequently try things new things out. SOme are hit and miss with the family, but some things have become regulars on our table. Just think - in a year, you could add 20+ new recipes to your repertoire.
In terms of herbs and spices: Id say essentials are salt, pepper, mixed herbs, paprika, garlic, chinese 5 spice, thyme, oregano, nutmeg.
Everything else will languish in your cupboard, being used on very rare occasions, until you hit on that perfect recipe that everyone loves and is easy to make.
It takes time to find the perfect foods - something everyone likes that doesnt take 17 hours of preparation to make.
I found it helpful to write down all the stuff I make with eg mince, or chicken, because while you might feel your skills are limited, you might find you can cook more things than you thought.