Go against your desires, and you will be rightly guided. خَالِفْ هَوَاكَ تَرْشُدْ.

خَالِفْ هَوَاكَ تَرْشُدْ.
Go against your desires, and you will be rightly guided.
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خَالِفْ هَوَاكَ تَرْشُدْ
أي: لا تتبع رغباتك وأهواءك إذا كانت تقودك إلى الخطأ، وخالف ما تميل إليه نفسك لتصيب الرشد والصواب.
وأقرب مقابل إنجليزي هو:
“Follow your head, not your heart.”
«اتبع عقلك، لا قلبك.»
وهذا قريب جدًا من المعنى؛ لأن المثل يحث على تقديم العقل والحكمة على الهوى والرغبة.
ومن الحكم الإنجليزية الأقرب أيضًا:
“Resist temptation.”
«قاوم الإغراء.»
لكنها أضيق معنى.
وأرى أن “Follow your head, not your heart” هو الأنسب كمقابل ثقافي؛ لأنه ينقل فكرة مخالفة الهوى من أجل الرشد، لا مجرد مقاومة إغراء عابر.
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"Go against your whims to find the right path."
In other words: Do not follow your desires and whims if they lead you astray; instead, act against your inclinations to achieve sound judgment and correctness.
The closest English equivalent is:
“Follow your head, not your heart.”
This captures the meaning very well, as the saying encourages prioritizing reason and wisdom over whims and desires.
Another closely related English maxim is:
“Resist temptation.”
However, this is narrower in scope.
I consider “Follow your head, not your heart” to be the most suitable cultural equivalent, as it conveys the concept of overriding one's whims for the sake of sound judgment, rather than merely resisting a fleeting temptation.

Leave a man to his own devices.دَعِ امْرأً وَمَا اخْتَارَ.

دَعِ امْرأً وَمَا اخْتَارَ.
يضرب لن لا يقبل وعْظَكَ، يقال: دَعْه واختياره، كما قيل:
إذا المرءُ لم يدر ما أمكنه ... ولم يأتِ من أمْرِهِ أزْيَنَهْ
وأعْجَبَه العجب فاقْتَادَهُ ... وتَاهَ به التيهُ فاسْتَحْسَنَهْ
فدَعْهُ فقد ساء تَدْبِيرُهُ ... سَيَضْحَكُ يَوْماً ويبكي سَنَةْ
ونكَّر قوله "امْرَأَ" لأنه أراد بالنكرة العمومَ كقوله تعالى {آتِنَا في الدنيا حَسَنةً وفي الآخرة حسنة}
والواو في قوله "وما اختار" بمعنى مع، أي اتْرُكْهُ مع اختياره وكِلْه إليه.
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Leave a man to his own devices.
This proverb is used when someone refuses to heed your advice. It is said, "Leave him to his choice," as in the saying:
If a man does not know what is possible for him... and does not choose the best course of action for himself,
And is captivated by vanity and led astray... and is lost in its own delusions and finds them pleasing,
then leave him be, for his planning is flawed... He will laugh one day and weep for a year. The word "man" is indefinite because the indefinite form implies generality, as in the verse, "Grant us good in this world and good in the Hereafter." The "and" in "what he has chosen" means "with," i.e., leave him to his choice and entrust it to him.
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المثل العربي «دَعِ امرأً وما اختار» يُضرب لمن لا يقبل النصيحة، فيُترك وشأنه وما اختاره لنفسه، حتى يتعلم من عواقب قراره.
ومن أقرب المقابلات الإنجليزية: Let him have his own way.
دعه يفعل ما يشاء.
Leave him to his own devices.
اتركه وشأنه وما اختاره لنفسه. ← وهو الأقرب في المعنى.
You can lead a horse to water, but you can't make it drink.
يمكنك أن تقود الحصان إلى الماء، لكن لا يمكنك أن تجبره على الشرب.
ويُضرب لمن يرفض النصيحة أو الإرشاد.
Let him learn the hard way.
دعه يتعلم بالطريقة الصعبة (من نتائج أفعاله).
A man convinced against his will is of the same opinion still.
من يُقنع على غير إرادته يبقى على رأيه.
أي إن النصيحة لا تنفع من لا يريد قبولها.
وأقرب مثل إنجليزي من حيث الوظيفة المثلية هو:
You can lead a horse to water, but you can't make it drink.
أما إذا أُريد المعنى الحرفي «اتركه مع اختياره»، فأقرب تعبير هو:
Leave him to his own devices.
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The Arabic proverb "Leave a man to his own devices" is used to describe someone who doesn't accept advice. They should be left to their own devices and their own choices, so they can learn from the consequences of their decisions.
Some of the closest English equivalents are:
Let him have his own way.
Leave him to his own devices.
This is the closest in meaning.
You can lead a horse to water, but you can't make it drink.
This is used to describe someone who refuses advice or guidance.
Let him learn the hard way.
A man convinced against his will is of the same opinion still.
In other words, advice is useless to someone who doesn't want to accept it.
The closest English proverb in terms of its literal meaning is:
You can lead a horse to water, but you can't make it drink.
However, if the literal meaning of "leave him to his own devices" is intended, the closest expression is:
Leave him to his own devices.