Sometimes it takes very little imagination to see ourselves overcoming the challenges.
Yes! Every time we decide on something, we always imagine and think what's ahead and overthinking too much could also sometimes lead to fear to take on that decision. When you are afraid, it could not always mean that something bad is going to happen. It just means that you have the chance to be brave.
Also thinking positively does not mean that everything will turn out okay. It means that you will be okay no matter how things turn out.