A friend writes books
(creates products)
for teenagers.
She spends at least
one day a month
at
the coffee shop
or the park
or a popular social media filming spot
or other places
teenagers gather.
And she observes.
She pretends she is looking
at her phone.
She listens
and she learns
and she applies that learning
to her stories.
Her stories (products)
hit bestseller lists
partially for that reason.
Spend time
with your target demographic,
preferably unnoticed.
Learn what is currently important
to them.
And apply that learning
to your products/services.