I had acted as you described - fearful of the future - when I was in my late 20s. By the time I was in my mid-thirties I managed to stop worrying as much.

Our egos and this life are impermanent and finite. Once I began to develop being , or some call it essence, core self, inner self etc., I began to see there is no future - only one larger ever-expanding present moment.

I decided that no matter what happened in the expanded present moment or from ego's perspective - the future: I am okay. Being okay doesn't mean I won't have the gambit of a full range of emotions from deep despair to ecstasy or to experience physical, emotional, mental or spiritual pain. I am not those experiences, the Being in me - though fleeting, transcends ego's content to live in brief moments of transcendence.

Ego is finite and Being is infinite. Infinity is not linear. Infinity is experienced in the moment. Writing about the transcendent is difficult because ego's mindset and it's buddy language is bound by linear space-time.