Does your wife know that you have a good job now? I think she does want to see stability on your part.
I would recommend sending your wife an email, perhaps once a week. Make it newsy, work is going this way, I am doing this, these things interest me. Write it as if to someone who doesn't know you well. So, NO SPILLING OF THE GUTS, NO BEGGING, NO PROMISING, NO WHINING. Just I am good, life is good. Want to keep in touch. Maybe she will write back. It is OK to ask about her life, but not to interrogate. Just the typical friendly letter, "How are you?" . then after about a month of doing this, ask her out to dinner. Do not beg her to come back, do not re-hash the past. Pretend she is someone you recently met and start fresh. You need to let the old relationship die and build a whole new relationship.
You can read Dia's thread for inspiration. She did an excellent job of moving slowly, slowly, ever so slowly back into her husband's life. No discussion of the past. None, I mean it. Face forward, look in front of you and see what's there. If you want change you have to change yourself.
