There are plenty of Christians that suffer unhappiness and emotional pain. Being Christian doesn't exempt you from life. Buddhist philosophy teaches how the mind works and how to avoid the suffering in life. It does not ask you to worship some other god and it doesn't have the typical elements of a religion. It is a philosophy about the workings of the mind.
http://www.openbible.info/topics/suffering
What does the Bible say about Suffering?
Romans 5:3-5 ESV
More than that, we rejoice in our sufferings, knowing that suffering produces endurance, and endurance produces character, and character produces hope, and hope does not put us to shame, because God’s love has been poured into our hearts through the Holy Spirit who has been given to us.
James 1:2-4 ESV
Count it all joy, my brothers, when you meet trials of various kinds, for you know that the testing of your faith produces steadfastness. And let steadfastness have its full effect, that you may be perfect and complete, lacking in nothing.
1 Peter 5:10 ESV
And after you have suffered a little while, the God of all grace, who has called you to his eternal glory in Christ, will himself restore, confirm, strengthen, and establish you.
Romans 8:18 ESV
For I consider that the sufferings of this present time are not worth comparing with the glory that is to be revealed to us.
1 Peter 4:12-19 ESV
Beloved, do not be surprised at the fiery trial when it comes upon you to test you, as though something strange were happening to you. But rejoice insofar as you share Christ’s sufferings, that you may also rejoice and be glad when his glory is revealed. If you are insulted for the name of Christ, you are blessed, because the Spirit of glory and of God rests upon you. But let none of you suffer as a murderer or a thief or an evildoer or as a meddler. Yet if anyone suffers as a Christian, let him not be ashamed, but let him glorify God in that name. ...
Just a few of the 58 verses on suffering in Scripture.
Avoiding suffering is not Biblical.
Take it to the Jesus who can heal any mental or emotional problem that we have (he can also heal physically-but choses not to here on earth many times).