Walk tall
Definition 1 of 2
Pro Tip 1/3Positive Connotation
Using 'walk tall' implies optimism and resilience despite challenges. 
She was rejected from several jobs, but she continues to walk tall.
Pro Tip 2/3Not Literal
'Walk tall' is metaphorical and does not refer to physical height. 
Despite being the shortest on the team, he walks tall.
Pro Tip 3/3Cultural Expression
In Western cultures, 'walk tall' is often linked to success and respect. 
After winning the award, he could walk tall among his colleagues.