Rom8:22- For we know that the whole creation groaneth&travaileth in pain together until now.
The issue of challenges in life is common to all that is why the scripture above made it clear that the whole creation travaileth in pains until now. The message of faith is not a denial of the fact we won't face challenges but it teaches us how to pray&grow through it.
As a believer, God would allow certain challenges in your life to prune you, prove&make you grow for kingdom benefits. Don't always see demon in every issue you're faced with.
Many believers are caught in a cycle of repeated challenges simply because they're not learning fast, when you see every challenge as a demon problem, you may stay long and keep repeating classes.
What has this challenge(s) taught me so far?