By the time you hit your 30th birthday, you should have a good idea of what sort of things you are good at from a career point of view and probably have a list of goals and targets that you want to achieve in the next decade and beyond. You may also have developed a passion for sporting pursuits and pastimes in your formative years and that means you may well be familiar with things like a lucky 15 calculator to calculate your potential winnings. Whatever your interests and career path, here are some of the things you should know in your 30s. 1) How to impress in the kitchen There are many good reasons why it is good to have some cooking skills under your belt by the time you are in your 30s. You should be able to cook a signature dish that impresses everyone. 2) Have control of your …