These fear makes people weak, and such weakness sometime causes to make a person stagnant even before trying something.
And for others this fear leads to having a habbit of keepibg secrets and working out everything in a very clandistine manner so no one have to know what one is planning to achieve.
As far as my reaction to such situation, I don't hide my plans for anything but when I don't have faith or confidence in the thing I am planning to suceed, I keep it secret.
"It is hardest thing in the world to be good thinker without being a good self examiner"
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease
But at the same time go on discussing with all is also not correct. Too many cooks spoil the dish.
So one should decide on sharing their planning with the people who really can help them. It is not the question of fear,it is all about usefulness. We need not advertise our plan and success in newspapers. If you feel that somebody can put in some additional in puts you can discuss with them.
Some people will be jealous of others victory and discussing with such kind of people is futile. Instead of encouraging they may discourage you. You all know the role played by Salya the Chariot driver of Karna in the downfall of Karna. We should be beware of such kind of people,
1. People do not want to tell their plan as they are afraid someone will hijack it.
2. They can not hear about their failures so only tell after they succeed.
3. It may be a superstition.
4. Their may be some official reason of hiding it - for example hiding from their employer.
Knowledge is power.
It is same in individual's case also. When there is competition or rivalry and the winner only gets the reward or award, participants do not divulge strategy. However when it is team work the strategies can be discussed as the winner or loser is the team as a whole.
I was quite open and transparent disclosing all my study plans and homework during my academic days. By this I was reinforcing my own strength and even helping other also to in and get good scores. Later on, I realised that this is possible in academic period because each student can score the maximum all the hundred persons can be first rank also.
But I had to leave this habit after I got some bitter experience. On a couple of occasions when I divulged my plans and strategy, it was coolly adapted by some others who pre-empted as they need not work for the strategy , and they got the limelight. I had to be disappointed naturally. After one or two more such incidents I learned the lesson and started playing cards close to my chest.
Let us be aware that there are some smarter people who can work 'wonders' making the duplicate as original and the original becomes fake and copied in others eyes. So beware.