@CherryBathBomb 
re mental health/anxiety I hear you.
The Conservative Party has been holding itself together with sticky tape over the last forty years since the 70s when we joined the EU. For decades, backbenchers and Eurosceptics have threatened rebellion etc, but the importance of the Union and the party as a whole, stopped people from properly challenging the status quo around Europe.
Enter Nigel Farage. Blustering, loud, impossible at times to ignore, the rise of UKIP under him meant the Conservatives started to face a real existential threat. I think David Cameron feared that the European Research Group (ERG) within his party, would start to force a split at the seams, with some of them following Farage's banner.
Cameron calls for a referendum, thinking that it would put to bed and silence his noisy backbenchers and see off Farage. He doesn't account for the result - almost 52% of people in June 2016 voted to leave.
Cameron resigns the day after (!) leaving a leadership process that resulted in Theresa May (a Remain campaigner) winning and becoming Prime Minister.
An effective Home Secretary, as Prime Minister May suffered with the challenges of getting a withdrawal agreement passed in the House of Commons, and getting a Brexit plan together that could be approved. So that's where you were hearing the extensions to Article 50, and the growing frustration amongst Leave MPs that we weren't "getting on with it".
Hence 7 June this year, Theresa May resigns, citing several votes of no confidence in her leadership, and her inability to get her Brexit plans through Parliament.
And here were are with Boris Johnson - arch Leave campaigner (although he could easily argue for both sides, such is his smoothness and duplicity) who won the leadership election this year on the promise to bulldoze through Brexit by Halloween, threatening to leave with no deal if we didn't get an agreement, and suspending Parliament in order to remove the obstacles May faced.