Originally posted by Farmer Brown:
so aunty yun.. have you got any proposals... yea i can sit around and think but if i can't think of anything i can't be faulted for doing nothing right?

That's why - you will never get out of your cycle and periodic mood swing will haunt you and you will never gain that kind of confidence others have.
What makes life complete; is a question rather subjective and personal. Even if I don't feel my life is 100% complete, at least I know I am not lifeless. But how you may say (think I repeated this before twice, but don't worry man, I am a naggy sort. When the situation arise, I will repeat without sweat

)
The psychological feel of lifeless is due to unfulfilling things we do everyday. It doesn't give us confidence, neither much satisfaction nor happiness in doing them. Likely, they are social & personal duties, liabilities or tasks we have to perform. You do them because have to and don't have much choice. You can do them less of course: but they can share extra energy on the next part:
Seek and understand your interest first; your leisure time (residual time after work) It could be anything, from Origami to sports. These things are likely to make you feel good, but confidence only flows in if you are quite expert/good in them (In your own opinion). It always goes hand in hand - good at something automatically gives you confidence.
With confidence, you would want to do more of the thingy. In the process, you get to know people with similiar interest or at least it may help you in the future. (You can use your skills in Origami to fold all sorts of lovely dopy thingy for your gf in the future, for example).
By keeping your mind open and the desire to try new things - you effectively repeat the process. Keep in mind that these things are interest which makes you feel happy in doing them - then as time goes by, you wouldn't feel lifeless because they are things you want to do
on your on accord.

P.S: Here's the theory; practical is the part on how you go about reflecting about your liking and execute the plan like above. With a vast interest, if also affects your communication skills for the better - imagine chatting with someone who knows many things than one who is 'lifeless'. With good communication and confidence comes Art of Seduction, blar blar blar.... it's a linked cycle.
Knowing is only one thing; attempting is another.
Cheers