Are there steps i can take to prevent getting depression?

Avoid depression: Depression can occur associated with feelings of loss (personal, financial, tragedies, etc.), but often can be due to feelings of helplessness or inadequacies. Some have innate chemical and hereditary susceptibilities. Regular aerobic exercise, social interactions, charitable and community activities, and ongoing hobbies, new interests, and outside contacts all can shield you.

Avoid depression: 1-there is a relation between season, exposure to sun light, certain medicines, positive self esteem, physical exercise and depression-- 2- some of the above has not been worked out yet- 3-exercise, some foods, having good social support and good sleep can all help deepening depression, but may not avoid it.