Research has revealed that a number of managers falsely believe they excel when leading their staff.
The Chartered Management Institute (CMI) survey of more than 2,000 bosses found that 14% felt they were born to lead, while almost half said their management skills were excellent.
The false belief could be damaging "already struggling" businesses across the UK, the research revealed.
In total contrast to the managers' views, a separate CMI poll showed that only 14% of bosses were thought to excel in their roles.
Ruth Spellman, chief executive of the CMI, said: "We're desperately short of good leaders in this country. Just look at how many FTSE 100 companies have sourced chief executives from abroad and how many Premier League football clubs have foreign managers.
"We're crying out for much-needed home-grown leadership talent and it's frustrating that employers are failing to capitalise on the dormant leadership skills that their employees don't yet realise they have.
"Management and leadership skill development has been neglected by employers, government and managers themselves for far too long.
"We need a renewed focus on investment in training and development in this field, both for the current generation and future generations of managers."