Talk:Hydrokinesis/@comment-28576324-20170731015105/@comment-29958896-20170810081155

What he wants to say with " [...] determined by the mental strength / power of mind and the power of one's own concentration." is, the more concentration you can bring up, the more easily it will do, what you intend it to do.

To improve your concentration skills, I recommand doing concentration meditation.

To do so, just sit (or lay) down and focus on your breath. If any thoughts arise, recognize them and get your attention back on your breath.