First - take a deep breath (= Second, take things one step at a time. I recommend this first: Personality type quiz
After you get a result from there, research it a bit on the web - it will give you some insight into how you interact with people, maybe even help you feel a bit less stressed over 'what kind of person you are'. After that - pretend you are your hubby and do the same thing for him.
Next - keep this in mind: the basis of your marriage is commitment. You and your hubby have committed to one another, which means that you are pledged to do all you can for the other - the definition of love is 'acting in a way that is best for someone.'
With that in mind, ask yourself how you and your husband are actually loving one another. I'm not talking about the emotion of like, or affection, etc. I'm talking about love.
When you understand this, it is possible to move on to what you need to be doing.
Next: you write:
Why is this wrong
I know it is wrong, and I have wanted to stop snooping, but it has been very hard.
? Who made that law? You call it 'invading his privacy'. What does a husband need to keep private from his wife? What does a wife need to keep private from their husband? Certainly secrets are useful - planning a great birthday party? Want some privacy in the bathroom? But - note that a marriage makes a couple 'one' ("...they become one flesh..." Gen 2:24). What your husband does is yours and what you do is his. If this can't be accepted, then your marriage is in trouble - if you should be married at all!
Communication is key. You point out that this is an area where you have difficulty. That is a good thing to note - as long as it is not used as an excuse to avoid communication. Communication is a skill, not an inborn talent. It is something that takes some learning, work and practice. It is also the key to changing the direction of your marriage: it is headed for a cliff. It won't survive the fall.
So are you willing to do what it takes? It is up to YOU to start the process - and it will be your husband's choice whether to come along or not - but one of you must take the first step - and right now, it sounds like your husband is busy elsewhere.
There is a lot of great help on this forum - and also many differing views. This is both a good and an evil - discretion is necessary. You post on the 'Spirituality' section - this means that you are looking for spiritual answers. Are you a Christian, or are you simply 'spiritual'? While the approaches are similar, there are also some differences.