The clear answer is NO.
"The" Adventist can not "reach" salvation. Salvation was "reached" by Jesus. He did it FOR us. WE don't have to "do" it. And we couldn't "DO" it if we tried. But "trying' would make no sense ... because it is a hopeless cause.
Salvation is ONLY N Him. We can NEVER "reach" it.
I respect that. But personally I am letting Jesus determine my destiny. And He did that on the cross 2,000 years ago.
John 3:16 "For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life."
The sealing of the 144,000 is taking place right now because when probation closes there will be no more sealing. we are living in the last days meaning that the people who is on the earth at this present time will make up the 144,000. they will most definitely have to be a perfect people with the mind of Jesus. You may decide that you are not part of that group but I believe by faith that I am. If you sin still then that is a good place to start, you can ask God to kill the seed of the carnal mind from within you and give you the mind of Christ. That is my prayer and I know one day very soon I will gain perfection because whether you are a part of the 144,000 or not you still have to reach perfection because sin will not enter heaven a second time.
I plan to die before Jesus comes. That way I won't be a part of the 144,000.
Their requirements for salvation are too difficult.
So, how do you plan on doing that are you going to take your own life?? Even if you do die and you can plan all you want to but God has the final say, the great multitude still have to meet the requirements of the 144,000. That is why Ellen White says that we have to keep pushing for the 144,000 we have to strive to be among them because the requirements is plural for all mankind living in these last days.
Only if they follow the divine pattern, which is:
"I can do nothing on My own initiative. As I hear, I judge; and My judgment is just, because I do not seek My own will, but the will of Him who sent Me." JOH 5:30 NASB
This is the ONLY way, anyone, Adventist or otherwise, can be saved. God is testing everyone today to see if they will do what He asks them to do, even when it makes no sense at all. ONLY when we come to the point that if God said it, that settles it for me, that we are safe to save.
God has given us a sign that He is makeing us good. That sign is the desire to worship Him on the day He set aside from Creation. See Exodus 31;13 and Ezekiel 20:12, 20. The Sabbath is the sign that God is making us good, i.e. sanctifying us.
Another equally as important indicator of reaching this status, in fact both must be present, is the characteristics of divine, agape, love being seen in our lives. This is the love that causes us to want to serve, not be served. The love that flows through us from God to all who we come in contact with as well as back to God who gave it to us. This love is a principle, not a feeling and will affect every facit of our lives.
So, when we see a loving person who loves to worship God on His day and loves to live like God has instructed them to live, then you can know you have found a genuine Christian., one who is safe to save.