Investors sound pretty optimistic; nearly 80 percent say they're somewhat confident they'll be able to afford their retirement, according to a recent survey. Unfortunately, their advisors don't agree. Only 45 percent of financial advisors surveyed by Harris Interactive agreed that most of their clients had realistic expectations about retirement. Fifty-five percent of advisors say they are working with their clients on new, more realistic retirement goals, and 52 percent are forcing clients to face up to lower expected returns and increased contributions.