When is delegation in a marriage irresponsible or unwise?

There are some parts of normal adult life that I'm really bad at, in part due to social anxiety. Examples include calling or meeting with companies (airlines, banks, etc) to make changes, writing emails that involve stress or conflict, scheduling events that we'll both attend, budgeting and finance, driving and navigating, and dealing with mechanical stuff. Should I ask my husband to do those chores? If I ask for help, I worry that I'm being weak, lazy, and avoiding my responsibilities. On the other hand, if I try to do the hard things on my own, I often mess up. Where's the line between delegating and shirking?