This is a very lovely card. It's a card of nostaligia and a card of wishful thinking. It could be that someone is looking back on their past may be and typically in relationships and love matters, however, it they could be thinking back on any matter to be honest. Be it a missed opportunity, an ex and or may be even a job. To determine what the subject is that that the querent is thinking about very much determines the cards that surround the 6 of cups.
Also, and again dependent on the other cards surround it, it could also signify a return. A return of an ex partner may be. Again depending on the surrounding cards will depend on whether that return is pernanent or temporary and what the outcome will be. It's a great card to come out if the question is "will my ex return" and certainly if it's coupled with say 2 of Cups or Ace of Cups then this really gives a a very positive answer to the question.
However, if the card is say coupled with the Death card, then a negative response to the question of "will my ex return" be the case. As with all Tarot Cards it very much depends on what else is around the the card in question.
It can also be said with this card that the querent may be wistfully looking back at their childhood or when perhaps they were more carefree and devoid of responsibility, Particularly if the querent is feeling low and has a lot of pressure at the particular time.
It could also be that the querent is to visit a place that they held dear when they were younger i.e. perhaps they may move back to their hometown or visit a place they always visited as a child i.e. a holiday destination or somewhere they visited on a day out. Again prudent to see if there is any travel cards or perhaps house move cards around this to see if they are returning to a familiar locations.
Also in a work related reading the querent may be falling back on skills they once used within a job. So perhaps they used to be a Accounts Adminstrator years ago and now they are a Personal Assistant. It may be possible that in their next job they need to use their previous Accounting skills.
Also and very delicately, in terms of health may be the querent is likely to experience the return of past ailments.
Either way, one of the cards that I am particularly drawn to myself and one of my favourites
Let me know in the comments if the 6 of Cups rings true for you this week and you how feel it's an appropriate card for you,