Practice. Practice. Practice. Not one SEO in the world knows everything, and if they claim they do then block their email address/phone number immediately. The industry is constantly changing which makes things difficult and Google constantly tweaking their algorithm is another factor to consider. To get to ‘the top of the game’, constant practice and research is needed. Testing things is also vital – it’s not uncommon that a great SEO devises a new campaign they’re over the moon with, and it falls flat on its face. Being wrong is not a mistake, being wrong and then employing the same tactic again is when it becomes truly wrong. Everyone will get something wrong (or ‘break’ a website for example). Just make sure you learn from it.