Deuteronomy 30:1-3 reads as follows:
And it shall come to pass, when all these things are come upon thee, the blessing and the curse, which I have set before thee, and thou shalt call them to mind among all the nations, whither the Lord thy God hath driven thee, And shalt return unto the Lord thy God, and shalt obey his voice according to all that I command thee this day, thou and thy children, with all thine heart, and with all thy soul; That then the Lord thy God will turn thy captivity, and have compassion upon thee, and will return and gather thee from all the nations, whither the Lord thy God hath scattered thee.
Deuteronomy 9-10, 15, 17, 19 continues to read as follows:
And the Lord thy God will make thee plenteous in every work of thine hand, in the fruit of thy body, and in the fruit of thy cattle, and in the fruit of thy land, for good: for the Lord will again rejoice over thee for good, as he rejoiced over thy fathers: If thou shalt hearken unto the voice of the Lord thy God, to keep his commandments and his statutes which are written in this book of the law, and if thou turn unto the Lord thy God with all thine heart, and with all thy soul. See, I have set before thee this day life and good, and death and evil; But if thine heart turn away, so that thou wilt not hear, but shalt be drawn away, and worship other gods, and serve them; I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life, that both thou and thy seed may live:
Also, Titus 1:2 reads as follows:
In hope of eternal life, which God, that cannot lie, promised before the world began
We must fully understand and accept that we can take every word in the Bible as truth. We also must understand that some promises are for certain people as the Old Testament is dealing with the Jews. Still, the truth that God sets before us, blessing or curse, rolls right onto us as well. Follow Him and do His will you will see His favor. Not to say this is financial or health or anything specific, but He will bless as only He can. He will bless in the absolute best way for each of us.
We can not see ten years down the road.
What today seems like a curse may actually be a blessing. Do not underestimate your obedience to Him and the outcome of doing right. The problem comes when we are seeking instant recognition for our obedience. The truth is so much we do as evangelism are things unseen to us as the evangelist. This is where our faith kicks in and we just do as He says. This is when we should simply spread the gospel to every creature. Be someone that wants to follow so close to Jesus that if He stopped you would bump into Him.