For Marriage
Put your Tawakkul in Allah and proceed by observing Sharia standards; do not pay attention to what others say.
For Business / Deal
Proceed with Tawakkul in Allah. Be careful not to fall into Haram, for in that case, you will suffer a loss.
وَإِن يَمْسَسْكَ اللَّهُ بِضُرٍّ فَلَا كَاشِفَ لَهُ إِلَّا هُوَ ۖ وَإِن يُرِدْكَ بِخَيْرٍ فَلَا رَادَّ لِفَضْلِهِ ۚ يُصِيبُ بِهِ مَن يَشَاءُ مِنْ عِبَادِهِ ۚ وَهُوَ الْغَفُورُ الرَّحِيمُ
Wain yamsaska Allahu bidurrin fala kashifa lahu illa huwa wain yuridka bikhayrin fala radda lifadlihi yuseebu bihi man yashao min AAibadihi wahuwa alghafooru alrraheemu
If Allah do touch thee with hurt, there is none can remove it but He: if He do design some benefit for thee, there is none can keep back His favour: He causeth it to reach whomsoever of His servants He pleaseth. And He is the Oft-Forgiving, Most Merciful.