2 Bible Verses about Goal Setting

For who of you that hath a mind to build a tower does not first sit down and calculate the expence, whether he hath wherewithal to perfect it? least having laid a foundation and not being able to finish, all that see it, should deride him, saying, this man began to build and was not able to finish.read more.
Or what king, going to engage with another king in battle, doth not sit down first and consult, whether he be able with ten thousand men to meet him that cometh against him with twenty thousand?

If the Lord will, and we should live, and do this or that: but ye glory in your presumption: all such glorying is wicked.