For those of us who did not think wisely before choosing their ID they will soon be able to change it.
The first change is free, and changes after that will cost £7.99/€9.99. For PlayStation Plus members, it will cost £3.99/€4.99 for each change after the first one.
\nMost games released after April 2018 and most popular games should be fine, however check the supported games list to be sure, otherwise you could lose progress or content.
To find out more check out the Sony link below.