Having spent the last year going through similar situation. My 2p’s worth;
– be reasonable at all times, even if no-one else is. You’ll feel better in the long run and ultimulately your children will love and respect you more for it in the long-term future.
– although you may split up with your wife, You will always be the father of your children
– try to talk through things if you can and reach solutions with your wife …life is a lot easier if you can both sensibly agree a separation between you,,, but be prepared that your wife (and friends/relatives) may not want to enter into discussion and may be completely irrational. With this in mind be prepared that you may not be able to make her see sense or have a rational dialogue with you.
– look after yourself, keep fit, eat properly and try to think positively. Try and find a friend who you can have a series of discussions with to try and sort out in your mind what’s happening and what you want.
– don’t rely on drink (or drugs) to try and makes things better….it won’t
Good luck, hope this helps