Hiya FFH, by reading your description of reincarnation it would appear you have not grasped the basics as it were.
Things will only get better if we choose to make them better...
That is quite correct. The individual must learn to adapt to change otherwise they will stagnate in a changeless dogma of whatever stripe.
Another life, external circumstances, conditions or things will not change things. We will still be the same basic being......
Umm.. who told you that, lol. FFH, that is simply not the case. Not only do you as an individual have to adapt to change but you MUST believe that you can control the circumstances of your life to a large degree. Anything else is fatalistic and not especially "healthy" thinking.
We control change, not our circumstances... I choose to change now and make a better life for myself......
Are not our circumstance in flux as well? I believe they are and so fall under the banner heading of "change", which you yourself agree we have control over. The main thing is that you can change both yourself and your circumstances. If you believe otherwise then your experience will reflect outmoded belief systems.
There is no need to repeat this life... It wouldn't do us any good...
In reincarnational terms one simply does not "repeat" lifetimes ad nauseum. Each lifetime represents a fresh focus and although the core being if the same, certain elements are introduced in each incarnation that did not usually exist in a "prior" life. You also have to understand that you are not at the mercy of so-called "karma" as it is normally conceived. You are not bound by the actions commited from a "previous" lifetime... although the individual DOES benefit from the accrued life-experiences.