Beloved, learn to keep your words. Let people know you for your word and for your values.
To say a thing and not do it at the TIME you said you will, even if you later did it, can not be compared to saying a thing and doing the same at the TIME you said you will. These two scenarios do not carry the same value. Infact the later saves time and builds esteem; while the former lavish time and soils integrity.
Furthermore, to say you will do something and afterward turn away from doing it is outright deception and dishonesty. Jesus Christ gave a lesson on this regard, and made it clear that it is better off you say you won’t do what is asked of you, but had a change of heart and do the good, than saying you will but did not.
Matthew 21:28-31 KJV
“But what think ye? A certain man had two sons; and he came to the first, and said, Son, go work to day in my vineyard.  He answered and said, I will not: but afterward he repented, and went.  And he came to the second, and said likewise. And he answered and said, I go, sir: and went not.  Whether of them twain did the will of his father? They say unto him, The first. Jesus saith unto them, Verily I say unto you, That the publicans and the harlots go into the kingdom of God before you”.
What you cannot do, don’t say you can because you desperately need the contract. You will eventually lose many future contracts because of intangible words and the seed of deceit sowed in the present. Don’t live for now with dishonest words; live for the future with careful and valued speech.
Ecclesiastes 7:1 KJV
“A good name is better than precious ointment; and the day of death than the day of one’s birth”.
Don’t get it twisted, not calling a spade a spade is nothing near BRANDING. Giving your client the impression you can deliver a task, when you know otherwise, is not an expression of faith; it is not pushing yourself to your limit. This is outright deception. Shun such self motivational jargon. Instead build capacity and character.
There exist a thin line between giving your product a BRAND and DECEPTION; please don’t cross the line.
An individual that does not keep his word, is an individual that does not value the use of word: he only ends-up not getting the required respect valued-word commands.
Let your word be your bond, as be example of Christ’s disciple.