The 'how' thinker gets problems solved effectively because he wastes no time with futile 'ifs'.

The power of positive thinking

The trouble with most of us is that we would rather be ruined by praise than saved by criticism

Change your thoughts and you change your world.

It's always too early to quit.

Believe in yourself! Have faith in your abilities! Without a humble but reasonable confidence in your own powers you cannot be successful or happy.