• Encourage them to seek professional help: Since depression makes people think things will never get better, they often don't bother to seek help.
• Help them get moving: The most important thing in the treatment of depression is "behavioural activation," which basically means to get moving-both literally (as in exercising or just getting out of the house) and metaphorically (in moving toward something you value, like family, career, or spirituality).
• Offer validation and encouragement: People with depression tend to think very negatively, so avoid the temptation to argue with them.

Numerous studies have shown that social support helps prevent and moderate the effects of depression. Since a big problem with depression is getting lost in the negative thoughts in your own mind, being around other people helps to refocus the mind on more important things, and can remind the person that they are so much more than their depression.

People with depression can be very challenging to be around, even for the most loving and well-intentioned person. Since these disorders hijack people’s thinking patterns, their ongoing negativity and pessimism can be hard to deal with. Progress can also be very slow for someone with depression. Even with professional help, it may take weeks or months to show improvement, so great patience is required.