Just recognized that jealousy in this case is an emotion of fear and control - actually the fear of losing control of yourself, or of your partner, of losing someone or something that you hold dear. Fear that you're not good enough, etc...
All jealousy is caused by an over-active and misused imagination. Your mind creates and dwells on all these worst case scenarios of what your partner is thinking or doing. And for some reason, as miserable as it makes us feel, we just can't stop... it can be almost compulsive - it can feel impossible to keep the jealous thoughts from your mind.
The irony is that these things that we fear the most cause us to act in ways that can actually make them come true. All of our thoughts and actions are centered around our fears and insecurities.
Remember, what you focus on grows...
Overcoming jealousy requires patience, open communication, and a good understanding of the triggers - where the jealousy comes from. It's almost always something in the past. Childhood experiences, indiscretions of a previous partner, maybe your current partner is just really comfortable with the opposite sex..
So how are you ever supposed to get over these intense feelings of jealousy that seem to take over your life at times?
First, love and accept yourself for who you are right now, today - no one can take that away from you. (Most jealousy is based in insecurity and self doubt) Do anything you can in this moment, today, to feel better about yourself.
Then really be honest with yourself - write down everything that triggers your jealousy. Look at each thing on your list - is it really important? If it's a person, ask yourself what makes you jealous of that person? Is it something that you do or don't like about yourself? Is it the way your partner seems to enjoy his or her company? Does that make you feel like your partner loves you less? Really dig down to the heart of the matter, but make sure that you're being objective - don't let those over reactive emotions cloud your list. :-)
And then talk to your partner about the things you've identified that you feel are truly important to you. Come up with some ways to identify when your jealousy is being triggered. Then, when it happens, you can take a breath, really feel the emotion, and try to accept that feeling for what it is - a chemical release in your brain. And then you can choose whether or not you want to react to the situation - from a place of neutral energy - not the over charged feeling of jealousy...
If there are some really big triggers, then maybe the two of you together can work to avoid those scenarios until you're a little more comfortable.
But don't get carried away and expect your partner to walk on egg shells to avoid your feelings of jealousy. They are your feelings - own them. I know it's tempting to try to control your partner and say "Why do you do that when you know it triggers my jealousy?" - but when you do that, you're actually giving away your power and putting your happiness in the hands of another.
Your partner can help you, but it is in the hands of the person feeling jealous to heal themselves. No one can do it for you.