2 Bible Verses about Goal Setting

For which of you, intending to build a tower, doth not sit down first and count the cost, whether he hath the means to finish it? lest haply when he hath laid a foundation, and is not able to finish, all that behold begin to make sport of him, saying, This man began to build, and was not able to finish.read more.
Or what king, setting out to give battle to another king, will not first sit down and consider whether he be able with ten thousand to meet him that cometh against him with twenty thousand?

instead of saying, If the Lord will, we shall both live and do this or that; but now ye glory in your boastings. All such glorying is evil.