I wish you the best of luck in your own struggles. I want to caution you about drugs; go ahead and take them and see if they work for you, but start doing other things in the meantime. There's a lot of evidence that antidepressants don't work over the long term.
For me, SSRIs sometimes improve my sex life, but don't seem to help with depression. I think there's a lot of evidence that they don't work as well as behavioral treatments for anybody.
What does work for me: exposure to bright light early in the morning. I don't have a light box, so this means going outside for at half an hour every day, soon after the sun rises. As near as I can tell, this may be the most effective thing for me, bizarre as it may be.
Possibly equal in value is exercise. Blumenthal of Duke University demonstrated that half an hour of walking, three times a week, was remarkably more effective than Zoloft. That was nearly 20 years ago; the results have been shown in more than a dozen trials since then. I require more than that to stay healthy, but exercise has been shown to work better than just about anything else for a broad range of people.
Next on the list is personal connection. Studies have shown that face time is enough; I personally have found that I need physical contact. Ranging all the way from friendly hugs to partner dancing to sex, all of these have a remarkably grounding effect and pervasively positive effect on me.
Omega-3 fatty acid supplements, better sleep habits, meditation and cognitive behavior therapy round out the list of things that work for me.
I strongly encourage you to develop habits around these behaviors, and I urge you to contact me if you think I can help you with anything.
Related to: Akrasia as a collective action problem and Self-empathy as a source of "willpower".
The Less Wrong community has discussed negotiating with one's conflicting sub-agents as a method to defeat akrasia and other forms of dynamic inconsistency, with some mix of reactions about how possible or effective that strategy can be. This article presents a successful example in my life, though it is probably an extreme outlier for a number of reasons.
I have been diagnosed with bipolar II disorder. It is one of the most significant challenges in my life, and certainly the one with the most dire implications. I can be fairly well modeled as three major sub-agents1:
Neutral feels it necessary to let Hypomanic take control more often to ensure that the compromise has weight to Depressed, but has started using Hypomanic to accomplish goals that are otherwise too exhausting to attain (a several-day code crunch or a need to meet and make a good impression on dozens of people). Meanwhile, Hypomanic has been more responsible lately in relinquishing control within days rather than weeks, partially because of these negotiations, but mostly because of other people in my life who have been conscripted to help monitor and rein me in.
I do not have a great deal of proven success with this strategy. I started doing this less than a year ago, and have not dealt with a full-blown major depressive episode since then. During that time I have also been more successful than ever at preventing myself from slipping into depression in the first place and treating early depression aggressively. In the end, that makes a much more significant difference, but on the two occasions when I became depressed enough to start feeling suicidal I was positively influenced by this agreement.
It seems unlikely that this approach will help many people with anything, but I feel like it is interesting in the debate about dynamic inconsistency, and I encourage others to find mutually-beneficial agreements they can make with themselves if they also feel like they deal with mutually incompatible agents from time to time. Also, this is my first post that is more than a link, so please be constructive.
Notes
1 I've never used names to refer to myself in different states, and don't think of my major sub-agents as individuals, but I felt that it was useful for didactic purposes to refer to myself in different states as different proper nouns.
2 I don't race cars, do drugs, or get in fights (except at the dojo). I do push my physical limits farther than I should (do parkour that I'm not be ready for, run 20km when I usually run 5, etc.), and I have injured myself this way, but just pulled muscles, sprains and once a broken finger.
3 I haven't heard this argument before, but this is the reason I haven't signed up for cryonics.
If it's not obvious, I was in a neutral state when I wrote this. It would have been impossible for me to do while depressed, and unlikely for me to try while hypomanic. I tried to de-bias myself, but no matter what state I'm in, I prefer my own viewpoint, and speak less highly of the others that diverge.