If you follow the above advice and read Tim Hale’s book (or any other good book), you’ll find that long term investing is not best done by trying to pick a stock yourself, but by trying to capture the average market return, which can be done with a broad ETF.
As for Brexit, no one can predict the future. But if you diversify globally (and probably even if you don’t), it is very unlikely that any political event will undermine the 1 thing that all long term investors rely on: the market will go up, on average, on a long time line, at a rate higher than cash savings.
Thanks, I’m going to listen to this podcast.
{Edit} I listened to the Invest Like a Boss #110 podcast. I hadn’t heard of John Thomas or his service, and a lot of the podcast is about that. It’s a multi-thousand dollar a year news letter/alert service, and it sounds like an active trading style. He does offer a free news letter, which I have signed up for. {/Edit}
I’m a big fan of The Motley Fool and the Naked Trader (book and website). I would recommend most of the Motley Fool podcasts.
For individual stocks, write down why you originally invested. Then should the stock be down (or preferably up) you’ve got something to check against before deciding to sell, hold or buy more.