Every marriage is different
The goal of marriage is the salvation of your spouse and children.
Marriage is a sacrament. Through it you receive an abundant and constant source of grace. I have heard it said that it is the primary means of salvation for the majority.
That grace frequently call us to intense sacrifice.
You must understand that love is a choice.
Guys, you must be prepared to give yourself up for her per Ephesians 5.
You must give up being single.
You must understand that getting married is rightly ordered towards procreation -- or, you had better understand that being a parent in short order is a very real possibility.

Read Psalm 127
Marriage vs. career goals .. marriage ALWAYS comes first.
The fruits of your career are temporal ...
You cannot take the fruits of your career with you.
The fruits of your marriage are eternal ...

the easiest attack point for Satan on a solid Catholic marriage is BEFORE IT STARTS
the warm fuzzies come and go
you will make each other mad on occasion
when dealing with "intense fellowship" STOP ARGUING and pray together first, no matter how much it hurts

Oh, and one last thing ...
Marriage rocks ... Learn everything you can about sacramental theology. Nothing makes your spouse more beautiful than understanding their purpose and your purpose. Understanding the link between the physical you and the spiritual you is paramount to having the type of love that is like a fine wine as opposed to the type of love that is like a birthday cake.

As time goes by ... which would you prefer?