How do you know if a dream you had has a meaning behind it?

How do you know if a dream you had has a meaning behind it? Can they really determine our future? (not referring to Istikhara) **Edit:** I found this question to be somewhat a truth claim question which would attract diversified opinions. So one request would be to ask you to mention in the heading what is your view i.e. Sunni/Salafi/Shias/Suffi etc. That would be great and a lot more helpful.