In real life, we tend to tell ourselves that we wish to have the ability or a time machine to travel back and forth to the past to do the things we should have done or change the way of things we have done or to the future to obtain the next set of winning lottery numbers (don't lie, we all had this wish some time or other). Needless to say that it is impossible, which is why Hollywood is making a ton of money when they come up with the next time travel movie, because it allows us to experience messing with time vicariously through them. There is a time travel movie for every longing, and we have compiled it all into this list below, with spoilers of course, about the different ways one changes their lives by travelling into the past and into the future.
"The Lake House" (2006)
In the past: After exchanging heartfelt letters through his special time-messed up mailbox at his lake house for a while, Alex Wyler (Keanu Reeves), an architect from the year 2004 begins to fall in love with a female doctor named Kate Forster (Sandra Bullock), whom he have never met before, but is writing him letters from 2006. However, the couple DID meet each other in an awkward-yet-beautiful dance to "This Never Happened Before" by Paul McCartney.
In the future: It is a bleak future for Alex, as Kate finds out that Alex's death in a traffic accident was the reason why he did not make it to their date on Valentine's Day in 2006. Luckily, she was able to deliver a last letter to him in order to warn him about his impending death.
"The Time Traveler's Wife" (2009)
To the past: T-800 (Arnold Schwarzenegger) is sent by John Connor from 2029 to 1991 to protect his mother and his younger self from T-1000, who is sent by Skynet to kill them. T-800 succeeds, and John Connor grows up to become the humans' Resistance leader against Skynet's killing machines in "Terminator Salvation".
"Men In Black 3" (2012)
To the past: Agent J (Will Smith) cooperates with the younger Agent K (Josh Brolin) to bring Boris The Animal down and save K from disappearing from existence. He also realizes that K is actually the man who took him into his care after his father's death.
To the past: Joseph "Joe" Simmons (Joseph Gordon-Levitt) is tasked with the killing his future self to close the loop in 2044, but his older self (Bruce Willis) overpowers him, leading to his failure to close the loop and ultimately, his discovery of the future where a mysterious person called the Rainmaker is busy ending all of the loopers' contracts in 2074.
In the end, young Joe sacrifices himself to stop his future self from killing young Cid Harrington's mother, which will then lead the boy on the path towards becoming the Rainmaker.