Actually butty I'll respond to your post as you sounded quite thoughtful. There is often a very fine line between having a 'bad day' and crossing over into suicidal thoughts. It doesn't take all that much to flick the switch. Yes, unresolved emotions are involved, but then there are some things that simply cannot be resolved. Some things cannot get better. Grief over a lost one is a good example. Nothing will bring that person back.
I don't know what time does but it doesn't take the pain away. Perhaps it makes it more manageable. It becomes part of you and if someone offered to take it away, you wouldn't want them to because the pain is the link to the lost one. What you do instead is take the loss along with you, somehow. So having a bad day and feeling you are starting to lose it is quite serious as unresolved emotions start to take hold and things can start to spin out of control. Especially if you have no support system. I said I'd started to feel like 'The Scream'. How many times have you heard people say after a suicide that the person seemed ok? Well that's because people disguise how they're feeling and trundle on until something tips the balance. That's why organisations such as the Samaritans are doing such a good job. People often just need to talk to someone, to ease the pressure, so they can gather together their coping skills and keep going.