أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
by letting everyone must know they are appreciated
It depends on the type of success. The celebration could be in the form of:
Awarding ceremony
Seminar
Publicity of the Achievement
Party (Could be a dinner or just a special "Let's all go for Lunch" occasion
But Alhamdulillah before celebration I oftend remind people to offer their thanks to Allah for granting them success.