It's not difficult to see I've received a set-back with depression (7)
I believe the answer is:
evident
'it's not difficult to see i've' is the definition.
I can't tell whether this definition defines the answer.
'received a set-back with depression' is the wordplay.
'received a set' becomes 'ive' (I can't explain this - if you can you should believe this answer much more).
'back' is a reversal indicator.
'with' says to put letters next to each other.
'depression' becomes 'dent' (dent is a kind of depression).
'ive' back-to-front is 'evi'.
'evi'+'dent'='EVIDENT'
Can you help me to learn more?
(Other definitions for evident that I've seen before include "'Plain, apparent (7)'" , "Plain to see" , "Noticeable" , "Obvious, quite apparent" , "Clear to see" .)