A notch in (someone's) belt noun phrase
A notable success or achievement, especially one in a long string or list of similar ones.
Peter practised hard so as to win the badminton championship. The win is perhaps a notch in his belt.
She pocketed a berth for the Brazil Olympics after a notch in her belt at the recent Southeast Asian Games in Singapore.
someone will be successful.
A go-getter is a determined and ambitious person who works very hard to become successful without being afraid of difficulties and challenges.
One has the potential for being successful in the future ahead.