There's a very simple rule here : If you never start, you'll never get ahead.
You may spend your days dreaming of exceptionally grand ideas, achievements, personal challenges and mad improvements for daily life but if all they are, are thoughts, you'll never find the success or the improvement you dream of so often.
It's one thing to cultivate a vision but entirely another to make it happen. It take courage, it takes gumption and your blood, sweat and tears but creating something that never existed before, doing things you never thought that you could, experiencing places and cultures you never thought you would, other than in those dreams, is a magical and awakening experience.
Allow yourself to dream big, huge, astronomically! Then have the courage to see it through, to substantiate those dreams and make your dream vision a tangible reality!