وَغَلَبَتْ مَشِيئَتُهُ الْمَشِيئَاتِ كُلَّهَا وَغَلَبَ قَضَاؤُهُ الْحِيَلَ كُلَّهَا
His will prevails over every other will, and His decree overcomes every plan.
People make arrangements, seek solutions and plan for the future. Those are real human acts, but none possesses authority independent of Allah's will.
Understanding destiny rightly does not make planning pointless, nor does it elevate planning above divine determination.