Claim them if...
Claim them the blessings of God if you are born again. If you are not, don't even dare it.
If you have them already as unbeliever, you have stollen them and be sure of loosing them when the time comes.
"According as His divine power hath given us all things
that pertain unto life and godliness,
through the knowledge of Him that hath called us to
glory and virtue: 2Pt 1:3
All things hath been given to you and I.
Go for it and it be comes you so that your joy may be full.
Don't fear to call them yours
There's no such thing as claiming the promises of God. God keeps his promises in His own time. God is not a sinful or forgetful man that has to be reminded of what He has promised.
The blessings of God are bountiful and given freely to all of creation. Having faith that you have the blessings of God means rejecting the world of pain, sin and distress and accepting the forgiveness granted by his son Jesus and with forgiveness all blessings.