There are many obstacles that might prevent otherwise good leaders from finessing their delegation skills.
Concern that it will take more time to explain the task rather than complete it yourself
Unsure who else is best-placed to undertake the work
Feeling guilty about handing work over to colleagues - don’t want to appear as if you’re “passing the buck”
Wanting to feel important within your team; doing the work yourself shows them you have the skills and knowledge
Enjoying lower-skill, lower-value work as a welcome circuit breaker to more stressful, strategic tasks