Define emotional instability/stability
Emotional instability. It's when mostly our emotional couldn't be directed through logical consequences. It's when we couldn't follow our own consideration. It's when we couldn't follow our own belief. It's time to say we are unstable. And it's on a first layer. But at the deeper layer, deeper lever, it's because there are two desires strong enough one to another switching one to another that would make ourselves living in a confusion, while on the other side there is no backup for logical consideration that fix with the two of them (desires).
So, having two or more strong desires running almost simultaneously, with just a few or less STRONG logical consideration to accompany it, and it will put us on confusion. And it could put ourselves trying to find or trying to complete our lack of consideration by picking (a very) quick consideration from our past experiences emotionally. This will make our our emotion unstable, our feeling unstable, because while ourselves were tracking experiences emotionally it created short sensation of feeling that would make ourselves more confused. And the worst, it could lead us to make improper action, such as changing action quickly.
Solution for this is by detecting first what emotions dominate them. And trying to accompany those emotions with logical consideration (whether based on past experiences or based on logical consequences for the goodness in the future). The point is, first identify what emotions are involved on someone and fulfill them logically. Sure we should make an adjustment so that they could follow their (implanted) logical consideration easily.
So, what is emotional instability? It's a changing of emotions almost simultaneously without being accompanied with proper considerations for each of emotions that are involved.
Problem solving:
Try to find out first, all emotionally involved within it and trying to satisfy it with logical consideration that are based on their own different needs.And trying to guide them to realize one of their emotional into reality WITHIN PRIORITIES or giving an alternate or compensation.Soon, they could control their emotion or somehow another situation changing their instability into another instability. But at least one instability could be solved. It would make them having confidence. And if we have patience to do this, soon they will have patience either to find for themselves some of logical consideration to accompany their emotional instability, so it will degrade their instability significantly.Less or more