From wikipedia:

Carl Jung developed this technique as one of several that would define his distinctive contribution to the practice of psychotherapy. Active imagination is a method for visualizing unconscious issues by letting them act themselves out. Active imagination can be done by visualization (which is how Jung himself did it), which can be considered similar in technique at least to shamanic journeying. Active imagination can also be done by automatic writing, or by artistic activities such as dance, music, painting, sculpting, ceramics, crafts, etc. Doing Active imagination permits the thoughtforms of the unconscious, or inner ‘self’, and of the totality of the psyche, to act out whatever messages they are trying to communicate to the conscious mind.

Following this line of thought, one should surely deem it not only healthy but essential to engage in some sort of creative pursuit from time to time. Read more at Wikipedia.

See also: Jung’s mandala.