求翻译：目标既定，在学习和实践过程中无论遇到什么困难、曲折都不灰心丧气，不轻易改变自己决定的目标，而努力不懈地去学习和奋斗，如此才会有所成就，而达到自己的目的。是什么意思？

Established goal, whatever the difficulties in the process of learning and practice, twists and turns are not discouraged, do not easily change the target of their own decisions, and strive to learn and struggle, so will be successful for their own purposes .

正在翻译，请等待...

The goal decides, in study and practice process regardless of encounters any difficulty windingly, is not all disheartened, not easily changes the goal which oneself decided, but unremittingly studies and the struggle diligently, so only then can have an achievement, but achieves own goal.

Targets established, whatever difficulties encountered in the process of learning and practice, and the twists and turns are not frustrated, goals that do not easily change their decision, and efforts to learn and hard, so will only succeed and achieve its purpose.