In my ignorance of 'what you did', you sound like a christian who is shitting their pants for breaking "the unforgivable 'sin'" which is "blasphemy against 'the holy spirit'", which makes it impossible for "all-powerful", "all-able" "god" to forgive you (which is a contradiction).
As quoted, Satan said He won't leave you. Satan also said, I think to HPS Maxine directly, that They reincarnate Souls until the Soul understands and advances, eventually, so as to escape the wheel of karma. You have the tools to free yourself, as well. The more you dwell on something, the more power you give it, and the more you draw it to yourself; if it is an enemy thoughtform fucking with you, then that is designed and intended to harm y, so feeding it makes it much stronger. You have to IGNORE it, with the only exception being to do workings for protecting yourself and doing banishing. Don't say/think to it, "Lol. Idiot. You'll never win", or give power about thinking about ignoring it; just IGNORE it, and do protection & banishing. Focussing on Satanic powers and the Daemons' sigils and abilities strengthens those attributes in you (I think you can pick and choose which you prefer, as well), and that also brings them to you, as well.
An important point might be for you to not force yourself to ignore it; just be calm and re-focus your attention on something else when you realise you are feeding it. I say "might be for you" because I don't know if that is a problem for you or not; we're all individuals, which brings me onto another point - we all move at or own speed, and Satan and the Daemons know that. If you are, however, taking advantage, that you can do what you want against Satan's Kingdom and just be forgiven regardless, just so you Can be careless and selfish negatively, and damage things again, you might want to remember,
"...but he that opposes me will regret it sorely"
- Satan, Al Jilwah, the Black Book of Satan
http://www.angelfire.com/empire/serpent ... ilwah.html
The Daemons are Just and Proud, and rightly so.
There might also be some latent insecurity/low self-esteem problems deep down that you might still need to get rid of regarding failing all the time (again, I am just throwing out ideas because I don't know you).
If you are able to yet, why not create your own thoughtform/s which benefit you? If you can and do, then don't forget to programme it/them to obey YOU ONLY and also to feed off positive energy, e.g. from the Sun or from Runes you empower it/them with.
It might be prudent to use a lot of different methods including those I suggested already, and also other methods you prefer. You might also buy and wear around your neck some Hematite used with THURISAZ -
"Hematite used with this rune can shield against electro-magnetic energies and is therefore helpful in deflecting curses.
...
White Magick: Rune of healing..."
or Black Tourmaline used with ALGIZ -
"This rune is used for protection. It is also used in consecration and the banishing of negative energies. It is excellent for the operator to wear when performing dangerous rituals as it protects against negative energies. Black tourmaline is the stone used with this rune."
http://www.angelfire.com/empire/serpentis666/Odin.html
For example, use it while doing the RtRS. You might wear it after, as well.