In my opinion, it is always better to cast your own spells. The chances of successful are usually far better when you do it yourself. Have you tried a candle spell for luck or an amulet/talisman to help draw it into your life? A combination of the two might help.
I don't have a link to them but they are easy to make. Most of what I've learned about them I read from various books and found from personal trial and error. I believe there are several luck spells here on the site you could try though.