Do you think I can save my marriage alone? I hope so, so very very much.
Absolutely, that's the lynchpin of DB'ing- "it takes one to tango". Sure there are no guarantees, but there are plenty of success stories around here that started out with posts much like yours. Most of those threads went through some incredibly dark times before finally ending in reconciliations. But don't expect this to happen quickly, it's a slow process taking many months. Read the book, develop a gameplan of doing 180's on your faults, write down the baby steps so you can recognize progress and most of all, GAL and work on yourself. Journal here to clear your mind and to get suggestions and support. Good luck!
