Difficulty with Meditation Posture I am able to meditate when on a bus, or when I'm walking, or sometimes standing; however, no matter how hard I try I seem to avoid formal sitting. I can't help but have the feeling that formal sitting would be most effective, and that I'm avoiding something about a formal posture that is also responsible for growth. I think this is merely effort. 

What can I do to engage in formal sitting, and avoid always only meditating when it is effortless? Should I: 1) diminish the time of sessions 2) change my meditation type 3) change the consistency of my meditations 4) apply something else?

In terms of consistency, I wonder if consistent yet short sessions are better than long and inconsistent ones?

Thank you.
As per my teacher, this happens when we train ourselves to hate meditation. We do that by turning meditation into torture and punishment. 

Instead, meditation should be something natural and (yes) pleasant.

-- 1) diminish the time of sessions?

Yes. You can start from something as short as 30 seconds. Do not ramp up too fast, only ramp up when you really WANT to sit more.

-- 2) change my meditation type?

Yes. Do not weigh your emotional mind with any notion of the correct target state. Do not blame yourself for not conforming to some ideal style, posture, or state of mind. Allow your meditation to be a natural discovery process that it is. Like a child playing a game, completely natural and spontaneous.

-- 3) change the consistency of my meditations?

Yes. Better meditate regularly, twice a day, 30 seconds each time - than randomly for an hour.

-- 4) apply something else?

Yes. Make it pleasant for your emotional mind. Beautiful setting, nice scenery, little visual noise in your peripheral field, comfortable pants, etc.