I would suggest Ylang Ylang to help with anxiety & panic attacks this helps slow down a rapid heart beat such as panic. I would also suggest sweet orange or mandarin any citris oils help lift depression, also frankincense is very grounding and also patchouli.
Some more tips for you
try and have regular massages such as Indian head massage or reflexology to help with manage your anxiety, stress levels and all are beneficial, also ensure you get some vitamin C and Vitaimin b12 in your diet or supplement and use magnesium flakes in foot baths, or soak in the bath with them on a regular basis as this is good for stress and balances the body and helps you sleep better.
I hope this helps.
Love GA x