Time-blocking could be a help. You block a few hours where no one should interrupt you, shut down your phone and close your e-mail client and just focus on work. In the beginning, it´s a bit wired because you don´t need to do anything else while working but you get used to it and become more concentrated. More Infos: https://zenkit.com/en/blog/why-you-should-be-time-blocking-a...