Our cultural heritage tours fulfil part of a personal development need as there is a strong correlation between cultural history knowledge and our own personal effectiveness and power. If we lack knowledge of our history, we are more likely to have an incomplete sense of self as a race or group. We may well feel confident in ourselves as individuals but lack confidence in the capabilities of our race or group; this is known as having high personal self esteem combined with low racial esteem. This incompleteness can negatively impact our psychological and social wellbeing.