You should have a minimum of three noms available to chase: VP, MOC, Senator. There are others you may meet the criteria for. Read the Nominations sticky here on SAF and USNA Admissions.
It is a competitive process. More people compete for noms than will get one. More people with noms will compete for appointments than will get one. Also guaranteed: if you don't apply for a nom, you won't get one, ditto applying.
If this is what you want, and then a minimum of 5 years serving afterwards, then you put in the work to get the nom(s) and get through the application process. Surviving the process, meeting all the deadlines, checking all the blocks - are part of the competition.
Browse, browse, browse here. Go to MOC Service Academy info nights and read their website nom info.
It can be done, but there is no easy way.
Edit: If "they don't pick me" is what happens, that's when your Plan B and even Plan C come into play. If you are driving toward serving as an officer, you will also be developing your alternate approaches. As has been said elsewhere here, "eat the elephant one bite at a time." Many times in life you will be faced with what seem like impossible tasks. You learn to break them down into manageable chunks and just get started.