I suppose, to answer this question:
What is your biggest struggle as a Christian...?
what comes to mind for me right now is this:
Walking out life at home that is consistent to what I preach/teach/read/share with my family. (I.E. being a living example, not living in hypocrisy "the bible says "xyz" but then turning and doing/saying something contrary to that.)
It is easy to walk out faith/ practice what you preach outside the home, where the people you interact with only see the side of you that you allow to be seen. It is quiet different doing so in the home where the ones you live with see EVERY SIDE of you, both the good and the not so good.
I think I could give other answers to this question, but this is what first jumped out at me, for myself .
How often do you pray about it...?
Since prayer is a matter of talking with the Lord, and can be done ANYTIME ANYWHERE, then whenever a situation comes to mind that I realize I need to repent of and seek help in. For example: I love that even in the most chaotic situations I can quietly say "Lord I need help here!" Situations that test patience "Lord, I need help with this patience stuff because I'm about to blow my lid!!!!" And then just like that... (so long as I YIELD (aka SUBMIT) to His leading, patience takes over me
How do you "renew your mind?"
by going back to the Word of God and checking that my actions line up with what He says.......
example:
1 Corinthians 13 1
Love is patient, love is kind. It does not envy, it does not boast, it is not proud. It is not rude, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. Love does not delight in evil but rejoices with the truth
Have I been patient with this person/situation? Have I shown kindness in the matter? What are my motivations for what I am doing? Am I keeping score of something done wrong
last year?
I then take those answers and reflect upon them. If my answers / actions are not lining up with the word then I know it's time to pray about it, find out what's in me that is causing things not to line up.
Sometimes it's that I've been caught up in worldly advice and have picked up an attitude of selfishness. When I realize this then I know it's time to get back to the Word of God and keep my mind upon Him in these matters.