I just read a great article by R Dovid Goldwasser on this issue.
Toward the end of the piece, the rav gives several recommendations: (paraphrasing)
1. reduce texting during the week
2. give away your cell phone for Shabbos (the rav says that he keeps quite a few cells for people over Shabbos & yo”t)
3. make a buddy system where you are accountable and can discuss your efforts and successes
4. learn about the holiness of Shabbos & the halachos.
5. make plans for Shabbos that will keep you busy and not bored
6. if you feel that OCD is involved, get help
“If you would like to take the first step on this journey, you can call me (R Goldwasser) at 718 677-3712 and- thought it’s not my preferred method of communication- I will send you a text of personal chizuk and berachah before Shabbos.”
Hatzlacha to anyone struggling with this issue.