Hi !!!
That's a very interesting question!!!
My decision would be based on what I feel and what I think, without a doubt I would choose to spend 1 year in the past, since I am one of the people who like the surprise factor, so choosing a year in the future ruin everything for me full.
Honestly, I would not like to be in the future, because I do not know what the same holds, I do not know if it will be good and I will love it or if I find out something that I did not want to know, or maybe I find myself with the death of a loved one, or the breakdown of my relationship, or perhaps a bad experience, I know it would be pessimistic to think all that, but I would be terrified to know the future, I prefer to live and work in my present so that the future is what I want to have.
Traveling to the past I can choose a year from a time that I liked a lot, so I would definitely choose the age between 17 and 18 which was the age at which I had a sabbatical year, that is, a whole year without studying, I worked and had money to do many things, I worked with my best friend and it was great because he was my boss.
I also went to parties a lot with my friends and I traveled, to the beach or to other places with friends also since I was single and left without commitments of any kind, really that time was very great, I loved it and without a doubt I would repeat it again.
In fact, I also remember having traveled by boat for the first time to a private beach where you can only go by boat and there is no sand or anything, that was the best thing in life, I took many pictures.
At that time I also danced (I am a dancer) and I was participating in competitions and I also loved my body physically, it was perfect ... today I stopped dancing for many occupations and commitments but without a doubt it would be something I would repeat again without thinking 2 times.
So I would travel to the past to live what I liked most and I would keep my surprise factor and let the future surprise me with the new things that would happen, because if I traveled to the future it would be like making me the biggest spoiler in my movie. life, and believe me, nobody likes spoilers !!
Regards!!