All Our Wrong Todays by Elan Mastai (2017)
This book looks at time travel from a fresh angle - what if one tiny mistake could cause huge ripples and change the world as we know it? Our hero, Tom, makes a rash decision that changes the future and lands him in our version of 2016, where he's shocked to see how badly things turned out. But soon he starts to wonder if his own life could be better in this alternate reality. Should he right the wrongs he created, or build a new life for himself in this new, less-than-perfect world? A gripping story with an ethical twist, this novel comes recommended by The Martian author Andy Weir.