Interrupted sleep: please help or I start smoking again

Help! After quitting smoking four months ago I have been waking early in the morning (1-3 am) and unable to fall back asleep. I noticed that when I am on the verge of falling asleep some odd congestion in the nose/sinuses causes a apnea-like reaction, sudden waking, even slight heart pain. Congestion goes away during the day.

This is my n-th smoking cessation attempt and so far I have been returning to smoking because of sleep problems. I am highly intolerant of sleep deprivation because for many years I have suffered from memory and concentration problems; anxiety and depression have recently become a problem as well.

I have seen a homeopath for this and for my earlier complaints. He gave me staphisagria (sp?) in the evening + tabacum in the morning, both 9X. This did not work; he gave me pulsatilla+tabacum. This did not work either. By this I mean, I still wake up 1-3, have tough time falling back to sleep, feel confused and cannot work due to concentration and memory problems
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1. Age 46
2. Sex M
3. country Poland
4. climate Continental
5. current complain Interrupted sleep + memory/mood problems
6. current medicine you are taking Pulsatilla + Tabacum
7. sign & Symptom of disease
Wakes up early morning, probably due to sinus congestion
Unable to concentrate during the day
Anxious, sluggish, low blood pressure

8. History
Years of lower back/ dorsal spine pain, of the numbness variety, from sitting; later also concentration and memory problems; recently depression and anxiety

9. Family background
'Lazy,' socio-phobic father, deteriorating intellectual faculties since early forties; heavy coffee/extra strong tea drinker
Irritable mother, furious in the morning, well predisposed in the evening
Loving and supportive wife and two adult kids

10. qualification of patient
PhD, social scientist, writer, college teacher

11. Nature of working
Research and writing, stock investor; now mostly from home

12. Desire and aversion of food
Spicy and fried foods; fresh fruit, gallons of espresso (gave up a year ago); currently on strict fresh fruit, vegetable + rice diet hoping that reducing weight might help. Dislikes nothing.

13. Mind-behavior…

Irritable, fearful, critical of others, social phobia, bossy but appears lazy, makes plans, does nothing, seemingly irresponsible, suicidal at times, excessive blushing, afraid of being 'discovered' as an incompetent, dishonest person; mildly dislexic since late 20-ties

14. Aggravation & Ameliration
Sitting in front of a desk top computer terrible. Swimming and skiing makes things worse.
Jogging, brisk walking, helps.