Salaam,
The trap in seeing Shaytaan as a separate entity, and GOD too, is that you risk being passive because you expect GOD to do everything for you through (often blind) worship and you are afraid (fear - instinct = shaytaan) that if you think independently then Shaytaan will mislead you for it is the curse traditional interpretation of Quran shows of the removal of GOD's grace if you question anything, and traditional interpreters are saying if you show disbelief in any parameter then GOD will stop guiding you and you are susceptible to so-called "whispers of Shaytaan" which is beyond your capability to deal with (according to them). It is an evil circle, this reasoning and hard to get out of.
The irony is that this fear is the whisper of Shaytaan in itself and is like shackles. And the clergy uses it to control people out of fear and persecutes those who deviate to protect the community which becomes a horrendous thing.
When you do an unrighteous act then the deed is from yourself and not some whisperer in the dark. It is due to instincts and nothing else besides lack of knowledge and wisdom, and willpower. That is your Shaytaan. Do not blame someone else, it is misconception.
The flock instinct is Shaytaan, i.e. to easily accept superiors you admire.
It all comes down to yourself, your ego. Reduce or remove it completely and you are well off. Then you can truly listen to wisdom.
Same if you pray about some personality change in life to GOD, you need to realize the prayer in GOD (Allah). No way that GOD does the hard work for you while you are lazy and lay back and relax. So it is true that all the good is in GOD but the bad is from ourselves, no blaming of an image called Shaytaan. In GOD you can be perfected.
And we should be careful in listening to other people because they may be a wolf in a wise man's garment. If they are very instinctive then they are not spiritual guides. Best is to use our own intellect and deem for ourselves.
Salaam