When I say "I understand what you must be going through", you know I am telling the truth because I have gone through the exact same thing.
Once upon a time my marriage was failing, but I wanted to do something to save it.
I spent so much effort in it - did a lot of wrong things, but a couple of right actions saved my marriage.
And now I want you to save your marriage just like I did - by filtering the wrong things to do, and leaving only the right.
I know that you must be thinking about new ways in which you can show your spouse how much you love him or her so that he or she won't leave you.
Of course, showing our appreciation towards our spouses is a great thing, and it is what holds a couple together - appreciation.
However, if things are going bad; and your marriage is collapsing, any excessive attempt from your side to "prove" your spouse of your appreciation and love can be perceived as "insincere" by your spouse.
This doesn't mean you should just "ignore" your spouse, of course - but in your attempts to show your appreciation, don't go overboard.
Doing so was my biggest mistake and was what kept me from repairing my marriage for so long.
I must at this point must make it very clear - you must never, and I can't stress the "never" enough, act "pathetic" towards your spouse so he or she will take you back out of pity.
Such actions involve constant pestering, crying, begging, etc.
Anything that you do to try to invoke some "pity" in your spouse - don't do it.
No one wants a pathetic spouse - no matter how much they pity them.
What we are trying to do is to create the "love" again, as that is what got you two married in the first time, and thus is the thing that should be keeping the marriage together.
Pity can never be a substitute for love - on the opposite, someone you pity is almost always someone you don't feel like falling in love with! Trying to save your marriage should start with creating the "love" and "romance".
You can do this by simple ways, or even by weird (and effective) ways such as being elusive; but whatever you do - do it so that your spouse will love you a second time, not so that they will stay with you out of pity.