Leaving the EU will be complicated, and this is obvious, right?
From what I gather, the majority of reasoning behind the UK’s decision to leave the European Union is based on migration. This is a legitimate problem, but this alone is only one part of an incredibly complex situation.

Yes, there are more migrants going into the UK than there are British going into the EU which is causing problems for space and the availability of resources. However more EU funding flows into the UK than GBP into Europe. There are also more manufactured retail goods, tech and machinery, textiles, energy resources and agricultural produce going into the UK from the EU thanks to the single market.
The UK is very strongly service-based as an economy which is import reliant and without much of a production sector so, there is an incredibly complicated problem of organising how and where Britain will get all of its goods made and how the UK markets will adjust to it. Will British farmers be able to cope with the drop in subsidies and the higher cost of exporting to the EU? Will young families be alright with cost of living increasing as import costs rise? How will the tourism adjust to no longer being apart of the EU and therefore having to jump through visa-related hoops that weren’t in place before? There are just some of the many incredibly rich and complicated challenges that face the people of the UK. They will need strong leadership and a lot of patience.
Inspiration: Britain is leaving the EU: Hear’s what that means (https://youtu.be/czWhVBmrNPQ)